Soldier Eddie basic ability to heal all is irreplaceable (Aces High Eddie have the same Roulette ability), and is crucial to clearing missions that allows you to use basic abilities only.

And out of all the damage build Soldier Eddie in other threads, I will highly recommend the ultimate healer build which is to use Invisibility Talisman and keep casting Roulette. It's the best way to get by the Fury move of the Beast in his 3rd form.