yay,  so here i go again with asshole suggestions,  cause its a lot of work i am asking for others to do,  sry about that.
i would think it would be epic to foster class-specific moves.  for instance:
 the possibility for a long/heavy polearm user to perform a 360 spin that slashes everything in its radius.
for shielders a bump jump,  where u can use youre heavy round shield while running and jumping into the enemy,  possibly throwing him to the ground like a horse would do.
for twohanders a tube of lubricant so my lance doesnt hurt as bad while i thrust it up their ass. 
(this because i am sure some twohander woulda been the first to bithc around about this post : )
ofc just spitballing here,  thought about the actual moves for about 3 seconds. maybe 4,  dunno.
also,  implement a "sprint"  function.