Are GURPS Tech Books released in wrong order / badly planned?

[Tzeentch]

Originally Posted by Gigermann

But more to the OP—if we were in agreement regarding the need for some UT Compendiums, what make the best use of the (figurative) paper it's printed on? What might be the easiest to write? A focus on (FREX) personal weapon development, or a snapshot of TLn? Would there even be enough material to justify its own book, or would it make more sense to continue to dole it out, piecemeal, as it has been, in various Pyramid articles?

-- It's not in an Ultra-Tech Companion line, but Psi-Tech and Transhuman Space: Martial Arts 2100 both have elements of this. Reign of Steel: Will to Live also can serve as an compendium of additional robot designs.