Interesting
1) I am okay with the OT in reg season and playoffs. I am not faulting your logic, I just think it is fun in the regular season and an absolutely exquisite endeavor of pure torture come playoffs. Nothing more nerve wracking than NHL OT playoffs.
2) I absolutely agree. This protects cheap shot artists.
3) Rink Size? See I don't necessarily agree that a bigger rink makes a more open game. Olympic or other International scores aren't appreciably different than NHL scores. A bigger rink makes it easier to push play on the perimeter. More neutral zone play which is boring.
4) No. No need to contract but god please no more expansion. With the best Russians, Czechs, and former Soviet bloc country players playing here, and the expansion of talent in other countries including the US, it is fine.