With my later years in W40K, I kept experimenting with the Imperials a lot, especially the Inquisition armies, partly for style, mainly for functionality. You could basically mix-and-match any Imperial units you wanted using the rules from the Inquisition Codexes. Think about it: guardsmen and tanks as the meat of the force (as well as the expendables), Sisters of Battle as the spearhead and then Deep Striking Grey Knights as the "coup de gra" that would drive it home. Beautiful.
Oh, and axia, I have heard about a W40K MMO being in development. When that comes out, I'm going to be on that game like white on rice.
Oh, and axia, I have heard about a W40K MMO being in development. When that comes out, I'm going to be on that game like white on rice.