Regarding GBAL, and generally games set in the Great Crusade (and HH to a lesser degree), something I've been wondering about for a while is how to represent the way that tech is supposed to have just been *better* at that point compared to in "modern-day" 40k.

Thinking of a bit from one of the HH short stories, forget what it's called, but it's the one where Ferrus and some of his troops find a space-hole with an IH marine from the future in it, strongly implied to be from 40k proper. One thing they notice in particular is how his bionics are so crude compared to theirs it reminds of the ones Orks make.

How would you reflect that stuff through the actual game rules?