The thing about the WMX200 is that it's fundamentally designed to be paired with the ATPIAL (AN/PEQ-15 or LA-5/PEQ), which is why the IR illum is so "poor" compared to lights like the SF V-series.
Insight assumes that if you're using the the WMX200 you're already using it in conjunction with a Class IIIb restricted laser illuminator, so the WMX200 is designed to "fill the gap" where it doesn't perform as well - namely as a closer range "flood"-ish kind of light, and it more bridges the gap between an incandescent with an IR filter, which it replaced, than it does as a stand alone IR illuminator.
Unfortunately on the Class I side, there's not really an easily available option, as you've found out, for a single unit that gives you good, useable IR illum in a compact package, as Class I lasers don't appear to be powerful enough to generate the illumination, while LED based illuminators like on the DBAL-D2 are quite large in comparison.
What you've discovered is why there are a lot of folks (myself included) who've kind of had their fingers crossed for a Class I ATPIAL, maybe with a variance for the illuminating laser for quite some time now, though I also wouldn't hold my breath for it, either.
The DBAL-D2 looks to be the best "single package" in terms of capabilities, but once again, I agree with you that the size and additional weight of the illuminator is something of a "turn off," especially for the price.
The CQBL offers a slaved laser in a nice, compact package, but cannot be offset, which some (myself included) are not terribly enthusiastic about.
At the same time, all the teasing from industry insiders about "something awesome coming down the pipeline" is very nearly crippling when trying to make a decision about what to buy. Y'all know who you are.
If you must have slaved at this point in time, you may find that the CQBL is probably your best option, and just work around the lack of offset (if that's even important to you) and maybe couple it with an M300V - or it may be worthwhile to just wait and see what's coming on the slaved VIS/IR and Class I front, and roll with a low cost model like an OTAL, or even a Crimson Trace CMR-201 IR or LaserMax Uni-IR with a WL/IR capable light and see what the future has to hold.
With all that, I definitely am after a WMX200 of my own at the moment though as I use an AN/PEQ-15 at my "part time job," but it may be a long while before I get my hands on another though, had to pass on a great deal a while back, and been kicking myself in the junk ever since.
~Augee