I think having some sort of instigation and heckling stat would be cool. Having the ability to get under the skin of your opponents and make them play worse would be really interesting. I could imagine a start player getting heated over something that someone else said on the ice, maybe taking a bad penalty or get into a fight as a result of being so hotheaded about getting heckled. Not only would it bring an interesting new angle to the game, it would allow for more expression in people's builds other than "me shoot puck, me pass puck, me hit." Perhaps even to go along with that you could have another stat that's like "mental fortitude" or something that would make it harder to get under that player's skin. Some players could be skilled with the puck and at heckling, but then also be vulnerable to getting heckled themselves. Alternatively as a superstar, you might want to put a lot of points into your mental fortitude so that you dont lose your cool in a crucial moment and cost your team the game.