Anybody here ditched their Dooku lead in arena recently?

Hi everybody, I'm looking for advice. I'm wondering if anybody has recently switched out their Dooku lead on arena teams, why you did so, and your level of success.

I spend maybe $20/month so nothing major, but I'm at the point where I'm getting top-10 tier7 raid rewards and need to start making some decisions on where to bring my team. I'm currently running g8 Dooku lead, g10 GS, g10 QGJ, g8 Phasma, g8 Daka. I have good fortune on offense (like everybody else) but have trouble staying in top 100.

I have 22 toons I can bring from g8 to g9 soon, so I have lots of options. I was thinking of ditching Dooku lead and going back to Phasma and adding 5s as an immediate switch, just to try something different.

Anybody out there think I should leave Dooku in the dust and slowly move to other characters? Thanks in advance for your replies!