GMs make fantastic grenade caddies and overall badasses, and can be quite killy too if thats what you want.

For scoring units, if you run coteaz then 3 acolytes in psybacks are fun. 62pts for a scoring unit and a psyback. Dies easily though..

Crowe can actually be useful bunkering down on your home objectives or midfield as this is often where opponents will throw their top-end CC characters, letting your suicide have some use.