I'm afraid Maul will suffer the same fate as Boba Fett. Both were awesome characters upon their introduction, but EU has been known to really milk out their popularity. Don't get me wrong, a lot of Boba Fett's stories are downright cool, but bringing guys like these back from the dead seems redundant to me.
I'm interested to see how Maul's reappearance will play out. It can't be any worse than episodes 5 and, for the most part, 6, I guess. So far, S4 has been a letdown for me, with the Mon Cal arc being one episode too long and now eps 5 and 6. I was glad to see the action return in the last part of ep 6!
The evolving design of the Clone troopers into their Phase II armour is great to see, though. And the action sequences are still very entertaining.