I never really paid any attention to Stryker before this game, but with the overhaul they gave him, I figured I'd check him out. He's so much fun to play as. He's not my best character, but I enjoy mixing it up with him from time to time.
Kabal is one I never really cared for before hand. He seemed a little meh, but he's now one of my top fighters. He's a lot of fun, he's got some good combos and special, and his look is pretty cool.
Sheeva and Baraka are two disappointments for me. I've never liked Sheeva in anyway and I feel the same now. Baraka's always had some good story and gameplay potential but I don't feel like they capitalized on either of those at all.