That would have still pretty much been a home game for Detroit. This game would be dead in the middle between the two cities.
Well yeah but Toronto's not too far from there (it's driving distance) plus it's a 100K+ stadium so there's enough tickets for both teams STH's plus way more.
Even at the WC at Citizen's Bank Park, Flyers and Rangers STH's were guaranteed seats.
It might not happen but the biggest hurdle's would be the NHL/PSU agreeing on a deal, parking, availability of the stadium, and Buffalo's owner trying to get the Sabre's in it.
There's too much money and exposure on the line for them not do it just because they'll lose one home game.