I recently picked up the Imperial Armor: Apocalypse book and it has the Fighta rules and says it's a heavy support choice. So I'm looking looking into converting the Valkyre to a Fighta. Now the friends I play with wouldn't allow me to put a Stompa on the board because it's an entirely seperate class. But for something different I know the Fighta wouldn't be a problem since it's just a Heavy support.
Do any of you guys play with something different than what's in the standard codex in your regular games?