While it does sound similar to 2k's enforcer system, 2k's implimentation of said system was pretty sucktastic. A system like that affecting players over the course of an entire game or series rather than a minute or two could add another element of depth to strategy.
Agreed on the onetimers, though aside from 2k's fighting system, face offs and some of its goaltending animations there's not much else I'd want to see stolen for EA's game.