I think replacing Kreela with Geomancer would work well. And I guess FB is your stun target?

Stunt target? Dam... getting very confused with CB...

As in - who does CB target with his stun? Since your team has no block debuffs or cleanse debuffs, it needs to be someone who doesn't have a fixed rotation of moves, so FB seems to be the most likely candidate.

yes she is! 

Kreela is very very strong in CB. Here's what she does for me:

i

What kind of results are you getting from her yourself?