This, except maybe two or more in a row can called for be delay of game (I think the same goes for icings? 3 or 4 in a row results in a penalty doesn't it?)
Get rid of the trapezoid
Playoffs are 1 vs. 16, 2 vs. 15 etc. regardless of conference. Best team faces the worst team, and so on and so forth. Often times the Conference Final ends up being the "real" SCF because the best teams are locked in the same conference or division..
Get rid of 3-on-3 overtime, it's almost as gimmicky as a shootout. Just do 10 or 20 minutes of 4-on-4, then a shootout. And don't give me some crap about player fatigue, these are professional athletes, I'm sure they can play 32 minutes instead of 26 minutes for a game.