Haven't finished it yet either, but from what I've played it's a pretty good game. Not one of the best in the series, but still enjoyable. The characters fall a bit flat and are somewhat forgettable, but the gameplay is a lot of fun, thanks to the character variety and each one playing very differently.
I think the characters are fine, but similar designs and pretty laughably bad VA hurts them a lot. Nine is funny as fuck..for the wrong reasons. Finish the game bro.