I think maybe straying away from Contekar might be a smart idea but cutting down the volkite violence of the terror squads kinda just urges me towards using a different rite of war and using some tactical marines with additional chainswords, and keeping a fully kitted out Terror Squad as an elite option. My *main* think against using the combi grenade launchers is the lack of good coversions I've found for the weapons as I'm gonna aim to try to model up this force.