Playing internationally for four straight years will be great to cultivate an international fanbase. I'm so excited about the idea that i think they should do more than one game internationally.
Taking another home game out of the regular season schedule would suck, so why not a preseason game? Burgeoning football fans would not tell the difference in the talent level, and season ticket holders would have one less exhibition game to complain about paying for. Or just do it like the HOF game and make it a fifth preseason game, though that would probably have to be worked out with the league offices