Poor Ahsoka...

My team is Phasma, Fives, Kylo Ren, Old Ben and Dooku. So, three counter attackers, two tanks, and Phasma as debuff/turn meter manipulator. That means no natural target to focus down. Phasma+ Fives+ Old Ben are an awesome debuff trio. Speed Down is my favorite debuff. Dooku plays in there with his stuns. Kylo adds very good DPS, counters and is a big threat at low HP. Whenever Dooku gets called by Phasma's leadership assist he has a good chance to gain half a turn meter.

So far I haven't met a team in the arena that I can't beat with this setup. But I'm just not committed enough to stay in top 5 or whatever I could be going for.