Whoah hold the phone folks. Replace EE? The only one who can revive a dead ST Han after he protects and provides massive TM?
OK so let's put this in perspective. Is this a top #1 position for Arena? Probably not. Is it a sub 50 team, absolutely! OP is asking about a TM team and everyone seems to be trying to replace it with a DPS team. Different play. Does anyone responding actually use Ewoks?
This team makes up for DPS in the constant barrage of hit after hit with turn meter manipulation. The only flaw is that if EE dies in the first volley, you lost - 100% of the time. But if Ben can get ability block out to prevent a dispeller from removing STHan taunt, or from another taunt team from activating theirs, you control the battlefield. Remember, you are playing the AI and not other humans. Sometimes AI will kill off EE with a lucky Rey tripple right away. Often not and you live to decimate the other team.
I use this same setup as the OP except for Old Ben. I often put Phasma lead and gain a LOT of additional procs. I also put Omega on Phasma Victory March to reduce the cooldown and Omega on STH Taunt to also reduce cooldown. So when I rez him with EE, then heal him, he can taunt again.
Not to mention, I wake up every day with my Arena position intact at around #60 instead of 204 like before ewoks. And it's totally fun to play.
@OP, Teebo and CC can go to gear 9 without needing the dreaded Fusion Furnaces or Droid Callers too. They are both heavy hitters and I highly recommend you Omega Teebo's basic for 100% TM reduction. Not to mention, this is a FANTASTIC RAID TEAM. I often open with 750K damage in a single battle with a similar setup. You won't regret the build on this team and some of the toons are even broken!