I love my EA cans, and I own four now. I'm considering a fifth. But I really don't like how there are no tool features on the cans.

I swap my cans back and forth between ARs, bullpups and AKs. On the ARs and Bullpups I use a taper mount (Griffin Plan A). On the AKs, I use a lot of JMac X37 mounts  with Hub threads. Because aside from HuxWrx, they are pretty much the only mounts out there that face mount on a muzzle, have a brake to protect my blast baffle and are threaded in 14x1LH and 24RHx1.5RH.

I have to remove my taper mount adapter so I can thread the can onto the JMac X37 when I shoot my AKs. Then when I want to shoot my ARs and Bullpups, I have to remove the can from the JMac mount (which is attached to the rifle, often timed with shims. So I don't want to remove the mount from the rifle) and then replace the Hub taper mount adapter.

This is kind of annoying and sometimes difficult when there are no tool features on the can (It's easy with my Griffin Explorr for example). I also can not do this at the range with EA cans since I have to use the vice block to hold the can.

Spanner notches are very helpful. Wrench flats are very helpful.

Noting to add but a bit of feed back.

I really like to see a company on forums like this that would likely be buyers of your products.
I like to manufactures asking for do you want to see, what do you need.   Then I especially like to see someone from the company (that knows their sh!t) coming in providing support to folks that will inevitably have a few issues with product, whether its a product issue or a end user issue.   I don't normally have issues with products I buy, but its nice to know I can easily get help if needed.

Laure used to be big in this, One of the things that got me sold on their product is, Mark (the owner) coming here and providing info.
I had bought my 1st LaRue scope mount and was trying to mount it and a fairly spendy (at least for my budget) Night Force Scope and was going to a shoot the next morning, so I wanted to get my gun ready.  I had a question on Torque specs and tightening order, I posted it to their group hoping one of the other shooters that had mounted a few might respond.  

Maybe 15 mins later, he responded with a video explaining and confirming my thoughts on how to go about it.  
There have been several other similar examples like that.

I'm on a few Car Audio FB groups and some of the Audio companies like Sundown Audio , have folks in the groups that help dispel BS info given by other and provide help when needed....

I hate using spanner wrenches and prefer using wrench flats.  

I really like the tools and how they’re used on my Rugged Alaskan 360.

I like face pin spanners.

Most companies cheap out and send the janky single tooth wrench for the edge engagement that require two hands until you apply enough torque; I ain't got two hands, only one and two fifths.

Ain't so much a choice, as figuring out what works to keep doing what I want and what I enjoy.

Pin spanner holes on faces often allow better tool fit / tool support to prevent tool slippage or user inadvertently cocking tool off of work piece providing there is sufficient depth of pin engagement. Pin holes can be located in areas with deeper cross section. Multiple pins distribute force over several work piece features compared to a single hook spanner in a notch.

A stout enough multi-pin tool can be fixtured with pins upright in a vise allowing a two handed grip on the suppressor held vertically or one hand on suppressor and one hand on a wrench engaging suppressor flats or notches and gravity is a stabilizing third hand. This can be less wonky than the two crossed wrench technique, mainly because of integrating a vise into the two-tool approach.

Pin spanner holes lighten pieces with a nice clockwork style.  

Pin spanners are cheap, adjustable and available from other fields (bicycles, grinders).  A functional pin spanner can be easily fabricated from hardware store bar stock and dowel pins and eyeball tolerances with a battery powered drillyreamer and an Estwing speed wrench.

Internal pin spanner holes on a direct thread mount stuck to a recessed muzzle can be engaged with a long reach two-pin ‘socket’ dremel’d out of a piece of water pipe.  

Pin spanners suck when you red Loctite a never-gonna-change masterpiece and the brain cells that used to hold those memories are lost in the same cabinet as your torch rosebud. Or was it left hand threaded?…

How about an option to NOT get tools and stickers? Save $30?
I suppose IF a suppressor manufacturer/dealer are too busy and the tools too diverse it might be more trouble than it's worth...

For example - I have 4 YHM suppressors and only use one of the tools they sent. NONE of the stickers

OR - instead of putting tools inside a QR code you can redeem for $X of stuff

Thank you!  I think I like what I think you might be thinking.  

I'm down with wrench flats or face pin spanners.
I never have really liked side spanner- no matter how careful you are, they always seem to slip.

I do also really enjoy seeing features that utilize common tools like 1/2 wrenches etc. I carry a tool kit in my truck but might now always remember to have a specific silencer tool with me.
KGM used to do an allen key aperture on their SWARM rimfire can. I dug that as well.
Q uses something similar where a socket can be used.

I guess my overall advice would be design features around commonly available tools, and try to steer away from specialty tools.

All that said I love Vox Blox and always have since we discussed them so many years ago. I recommend them quite often and they're one of the best tools that a silencer nerd can own.

I don't own an EA cans so not sure what they do or do not come with, but l know ECCO purposely sells their cans with nothing extra to keep their costs down for the consumer.

I’m in the camp of wrench flats and sockets. I don’t dislike spanner wrenches, but I do dislike then cheap wrenches that stretch/warp/bend/break. The new DA ones with two teeth work well, but only fit DA.

And Vox Blox are a life saver as well

Wrench Flats Wrench Flats Wrench Flats

Somebody at your Class III dealer owes you some Gummi Bears

Wrench flats are great. If the fitting is side spanner style, making them the castle nut dimension means I can always find a wrench, and it can be as quality or cheap as I decide.

A while back I asked for advice about a good quality Spanner. Ecco Machine, along with a few others here recommended the OTC 4791 Spanner. I bought two.  It was a great recommendation and it's a nice tool. They don't slip, stretch, warp or break.  I don't use the mfg provided spanners anymore.

https://www.amazon.com/gp/product/B00BVL7ZBY/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Real talk? STLs so I can just print the tool I need at home.

A comment and a question

Comment: I'm also on team wrench flats. There are other ways to do it but imo nothing as versatile and robust as simple flats. To the extent they can come in a relatively "standard" size, even better.

Question: Can a Vox block provide enough clamping force to torque down a HUB adapter? Some cans just don't give you much purchase to keep them in place while torquing down an adapter and that can be a nightmare. I guess one could try and clamp the body in soft vice jaws but something about that scares my peanut brain

Where possible, I like flats (big enough for a non-ground-skinny wrench or crow's foot) and integrated features like a square or hex socket shape built into an endcap opening, or a standard socket sized external feature. The more that common sizes are used the better. It's great to not need a new tool / size for every new item.

Edit - thin flat stock wrenches may work, but in the back of my head I'm expecting them to deform like the other thin flat wrenches I've encountered. (mostly from flatpack furniture -those usually suck)

If you have a couple of the same, tape them together with electrical tape. Usually they will still be thin enough to fit.  I to this with my Griffin wrenches to use on muzzle devices.

I think cans that use spanner wrenches look better, but I slightly prefer cans with wrench flats so I can crank on them if necessary.

I got a couple OTC 4791 Adjustable Spanner Wrenches off of Amazon.  They work very well.

Word.
Guys who buy $1000 silencers are made happy by cheap vinyl stickers.

I started buying generic gun and Second Amendment stickers from Temu and keep a pile on my tabletop.

I remember when you could get a rad suppressor for a logo tattoo.  The good old days.