So, I was not too excited about this game when it was announced. But in reviewing some old E3 impressions articles about it, looks like it supports Download Play requiring only one cartridge. That, may be a killer feature for me. My wife and I love the Zelda franchise lore, and she often watches me play the main games and wishes there was a multiplayer option. I envision this game as something we both play together for a half hour a night and have a blast trying to figure out the puzzles. This also solves the problem of not being able to communicate via voice chat since we'll be in the same room.
Edit: So, apparently Shikata released a statement saying it is only one or three human players. If one drops out online, you will get a "game over" screen. What could be the thinking behind this? If it's not a specific gameplay reason, it seems like a poor choice.