Two necessities:  The HDPE frame sheet/foam insert, and the Condor T&T Pouch.  https://www.condoroutdoor.com/ma54tandtpouch.aspx.  This pouch fits perfectly on the PALS webbing on the dorsal side of the LBT pack, and compensates for the pack's complete lack of internal organization.  The pouch is made well enough to last a long time as long as you don't stuff it with fishing weights.  DO shop around for price and color/camo pattern.  I have these mounted on a number of my packs.  with a shoulder strap, can also serve as an over-the-shoulder pouch.

I don't know of any US-made equivalent to the Condor T & T Pouch.  Condor stuff is OK as long as you don't over-stress it.  Small pouch like this, without a lot of weight in it will be fine.  Mine have held up OK.
FWIW, LBX is LBT's overseas-made line of stuff.  Items I've bought seem to have been made in South America, IIRC, and fully GTG.  You might want to have a look at their stuff.   http://lbxtactical.lbtinc.com/.

Tactical Distributors also has LBX stuff; most items a bit less than from LBX direct: https://www.tacticaldistributors.com/collections/lbx

After doing some searching, there are some domestically-made external organizer pouches, like the one mentioned above, available.  Design, prices, and colors/camo pattern vary with mfr, of course.  Take a look around, and see what suits you.  For the LBT pack which both you and I have, the Condor has suited me well; YMMV.  OTOH, having some sort of external organizer pouch adds greatly to the LBT pack's utility.  I add a Condor T&T pouch, or a Condor Sidekick pouch (smaller version of the T&T) to any pack which lacks an external pouch with built-in organization.

Some features of the Condor pouches which I have come to appreciate are the adjustable drawstring which allows the pouch to be opened to 90 deg or less, as the user chooses, thus allowing easy access to all contents.  Another feature is the Velcro tabs on the sides, which, if the zipper should ever fail, will secure the pouch in a closed position.  It is a bit of a fetish of mine to rig zipper back-ups; I've had zippers fail at the most inopportune times (Condors have not failed as of this writing), and having a backup is now important to me.   The included clear plastic map pouch (T&T only) is a nice touch.

This sort of pouch is often discussed at edcforums.com.  Might have to register to do some searching.

Here's a YouTube vid of what can be placed inside a T&T pouch: https://www.bing.com/videos/search?q=YouTube+Condor+T+Pouch+T&&view=detail&mid=9822E7B0DF6AFD2388A59822E7B0DF6AFD2388A5&FORM=VRDGAR

I have always said that I trust Condor gear in inverse proportion to the weight it will carry.  I believe that to be so, even today, when some users of recently-made Condor stuff have said it held up well enough for them, and seems to have improved a bit in quality.  Frankly, I have serious reservations about any piece of Condor gear that is intended to carry a lot of weight, such as a pack or even a plate carrier.  As you have noted, the stitching looks OK to the eye, but the quality of the thread, and the manufacturing techniques, apparently leave a lot to be desired when the item is subjected to weight/stress.

However, some Condor gear carries so little weight that it is not over-stressed, and so it works out well.  The T&T pouch is one such, IMHO.  I've actually used mine, and it has held up well beyond my expectations, and is still working fine.  It's also true that I don't overload it with all sorts of heavy items, I don't over-stuff it thus stressing the stitching/zipper, and make a point to not be ham-handed when using the zipper.  I don't normally suggest/advise Condor gear, (In fact, I generally advise against using Condor) but this particular item, the T&T pouch, is so handy that I make an exception to the rule.  YMMV.