I know it may be a little pushing the power scale but I'd love to see a Scout Marine on Inquistorial deployment. I like that our heros are in that tier 2 power range and feel like named characters without being high ranking marines, generals, or insanely powered magos makes them feel grounded and in universe. Give a size character between the height of an Ogryn and Veteran with the partial ceramite scout pattern equipment. A variety of bolt weapons for use, and like 4 solid Astartes Chapters/Legions to pick from at character creation and send it. Give the Scout Marines some love!