it would be cool if there was an option for choosing a random pre-made deck, that way if you had multiple decks set up you could randomize which you got, just a thought ;=]
a full mute instead of only muting speech would be nice, the chirping birds are a bit much. needs a time limit or number of kills to level, gets tedious quickly. more phrases for the lamer would be a good idea.
movement attacks only cancel a slower attack that has one range, not both ranges. if the attack works at both ranges or is faster/equal in speed to the movement attack it still works normally.