I would like to suggest something. The game is wonderful, but I think that players should get a reward fro beating the game, I suggest the ability to switch between leo and Leo armed with wings. nothing more than a skin change, but still worth it.
I think that this game is the most amazing game I've ever seen! I love how this game's plot goes, and the ending scene sent chills down my spine, simply amazing!
Tabby, the reason why abilities such as slow and freeze have a long cooldown is that they are normally used to escape opponents. Unless of course you are in a situation where you can't run, in which case, don't use abilities with long cooldown time.