A Crew i imagine to be fun:
Mei Feng (Diesel Engine/Magical Training)
Forgeling
Sparks LeBlanc 8
Mobile Toolkit 3+1
You can pump up Mei Feng with Focused from Toolkit, give her fast with Sparks und fill her up with explosives. Then jump in with her and do some Damage at the end of Turn. If you get damaged, you can activate early next turn, again do some Damage, jump out and get healed up by Toolkit and Sparks.