I want kix so they can have a healer although it may require a rework to kenobi's leader to include either clone healers or start giving the tag to characters and have it be republic. As for others hevy would be cool but you could just reskin clone sergeant in theory, Gregor could be a taunting clone tank that gains buffs as allies die, I don't know that much about Wolfe besides the scar and he disobeyed 66 but it does lead into synergies with him and koon, Rex and anakin (first Threeway synergy?), Cody and kenobi, fives and echo (and give at least one of them their helmets!)