I believe the "Feel" stuff. Mainly because Miyamoto has been saying he has wanted to make a game you could feel for years.
I have also heard of this tech in the past. It was used on steering wheel monitors and similar stuff for personal vehicles, but was unsuccessful because it cost too much money and had no real practical use. I could see this being potentially amazing in games, but having a controller with a wide screen on it sounds damn expensive enough as is... Controllers are already 50 damn dollars, I cannot handle another cent.
I hope they do not use that name though. Wii as a dick joke got so annoying three minutes after they announced the name, I shudder to think how the world would react to "Feel Super Mario".