sounds like fun!
I never liked the fluff approach, to be honest. Sure, it should not be all mixed up in a weird way, of course, but dreadnought detachments in epic scale for a long time have been a legal option in epic lists. I mean, its hard to compare a skirmish game like 40k with Epic. And considering the Inquisition (GW) updating the fluff every one or two years, anything we do now will be out of fluff in 2 years, anyway (or totally in conformity with it

) Just compare Space Marine Company composition from the E:A Rulebook with the Space Marine 2nd. Edition rulebook's composition...