Until someone defines "core" gamers, specifically in relation to Nintendo, all of you are just pointlessly whining.
Because from where I'm standing, Nintendo has still done plenty to give people who liked Nintendo in the past something to like now. Motion control isn't a valid complaint - most games give the option to play another way (Classic or Gamecube controller).
Neither is the graphics complaint, as Nintendo has never been about outdoing its enemies with pure technology either. Hell, some last-gen Gamecube games are more visually pleasing and better looking then the best graphics that the 360, PC and PS3 can put out.
"Oh but they don't innov-" *smack*
Thats a bull#$%^& excuse too. Nintendo does plenty of different and innovative stuff (they have Shiggy, after all). Innovation doesn't mean "good" either. There is plenty of "new" and innovative stuff on the 360, PC and PS3 that sucks. Nintendo is wise. They have something they know that works and that people enjoy. They change it to try and enhance that experience, not re-define or comepletely change it. Obviously, they're trying something new and dangerous with games like Metroid: Other M, but then again we haven't actually played Other M yet, so we don't know how different from Metroid or MP it will be.