I'm actually very excited since I do use handheld platform quite a lot when I'm on the train/plane/boring family trip with my wife. As Ninja_Mime already mentioned, a MK adventure game would be awesome and I would definitely check it out - as I'm planning to get the Vita definitely.

In case the gaming experience is weak as it was with the DS versions, I'll simply 'throw it in the bin' and move on with some good RPG or Wipeout :D