Another question; does the NHL actually want to go with a 'no fans in the stands' re-opening plan, considering that the NHL is really a gate league, not a TV darling. I can see leagues with massive TV contracts doing this, like MLB or the NFL, but the NHL?
What do they stand to gain?
Continuity of the season
Players and fans won't feel cheated out of the tournament, good for fan goodwill, player's morale.
Lots of new eyeballs, since there is a pro-sports drought worldwide at the moment.
What do they stand to lose?
Playoff gate/concession/parking revenue ( but they would anyway if they stayed closed)
Integrity of the tournament, as there is no playoff format that will please anyone short of playing a full 82 and not going by point %.
Another Covid-19 case among NHL players would be enough to stop the tournament in its tracks. Starting and stopping the playoffs would be disastrous, much worse than simply staying closed out of an abundance of caution. If it affects the player's ability to continue playing in the NHL (ie lung damage leads to less stamina), that's going to be a mess because the insurance company might say that the NHL didn't perform their Duty of Care to the NHL players when they re-opened.
Atmosphere - Instead of playing with emotional intensity with 18000 fans, it will feel like a scrimmage match. The only cheering will come from the benches. It's not going to have the look and feel of a tournament of its importance, it will feel like a pickup game. The fans won't be able to provide energy to the building for come-backs etc.
Visiting teams have nothing to fear, home ice advantage will mean nothing except for last change. So much for that 7th game at home you worked so hard for all year.