[Help to design] In the 41st millenium there is only...

[Dangerious P. Cats]

In the 41st millenium there is only...

AppleSauce!

I was looking at doing a 40K based campaign a while back since I wanted to work with a setting that was both original and familia to players. I tended to treat a lot of gear as lower TL on the assuption that low TL stuff would be easier to make in a higher TL. Guard armour was TL 8 body armour, I just used the Generic riffle from basic set of an auotgun. I found no trouble giving guardsmen basic swords and knives with no special monoblades or vibrobits, reserving those for officers and space marines which were by definition hardcore.

The big thing I found helped me was assuming that much of what you hear about Space marines is Imperial propaganda & myth making. No acid spit or concealed projectile finger nails. They were still really powerful (+6 ST & HT will do that to a person) but within the realm of the game mechanics.