It would be a much tougher sell to Wii owners. For Japan PS3 owners, it's close to exactly what they were looking for. On Wii, there would be little or nothing justifying it, unless they completely changed the game design. Many FF loyalists would jump over to play it, but SE can't expect that sort of investment from all their fanbase.
A game I'm developing with some friends:
www.xnagg.com/zombieasteroids/publish.htm
It is largely a technical exercise but feedback is appreciated.