I don't see how his kit will be bad. Based on the other two journey toons he's gonna affect the arena meta, and he'll have 3 zeta abilities.
And I think one of the reasons he's being released this way is because he is very powerful and is able to supplant Traya. Most people don't have Traya at 7*, if unlocked at all. Releasing a toon to the masses that crushes their crown jewel would be a slap in the face to everyone who sunk crazy amount of resources into the Sith Raid.
Releasing like this pretty much guarantees 98% of the people that unlock Revan will be whales, and most whales have a 7* Traya (if they know how to play the game). So to the whales it's not a big deal to supplant Traya.
