I guess for me the question is why the NHL would try to sell 40,000 tickets with one extremely expensive outdoor game, rather than selling 40,000 tickets with two inexpensive indoor games.
The major reason for outdoor games in NHL markets is the national TV revenue and to drive season ticket sales. Unless we’re talking about a scenario where the NHL is putting a team in Europe, neither of those will really be a factor. The promotional value-added also seems pretty negligible unless you’re expecting to eventually put a team in that market.
The only other rationale I can think of is the novelty factor which might increase ticket value. But is that really a significant consideration here? I doubt it, given the overhead expense of the event.
I dunno, I think it would be successful but I just can’t see the strategic purpose in doing it.