I agree with all your points. Also, when picking between Toronto and Edmonton, there may be some influence (aka heavy lobbying) by Rogers for Toronto, as they own part of arena (which would put some $$ in their coffers) and most of the broadcasting will likely originate from Toronto which would give them proximity for socailly distanced interviews with the players as the playoffs continued.
Completely sarcastic comment: In probably the craziest NHL season of our lifetime, they should bring back Grapes to provide commentary. At least it would create a whole lot of buzz. Even negative publicity is publicity!