I'm excited for many of the sequels/franchise games at E3 this year, but I think I would rather play something I haven't played before. Kid Icarus: Uprising seems to offer something other than the original, but from what I saw of Donkey Kong Country Returns it seems largely unchanged. I still want to play it though, but not as much as I want to experience design ideas I've yet to play.
I'm not saying rehashes and sequels are "bad" games, but that new ideas excite me more.