I'm into it. The lack of synergy with the regular Sith tag is a bit disappointing - I had really hoped to use Palpatine and Sion with him. But while it's clearly mega-OP, the focus on anti-Jedi abilities makes me think that some other squad (CLS? Traya? GRIEVOUS, EVEN?) will have a shot against him. The lack of an inherent massive speed boost from the start, like JKR has, suggests that a very fast team would have a chance to subvert him before the engine gets rolling.
One thing I am curious on: on his lead, does the enemy have to go below 50% and stay there? Or just get below 50% at any point during the turn? If it's the former I feel like mechanics like Savior or Vandor Chewie's zeta will be able to avoid it, at least a bit.