Can't see it being Galaxy games, how would the starbit collection/catapult/sticky plants work without the remote? The startbits are pretty integral to unlocking stuff and for bosses, you kind of need to be able to pick em up from far away by pointing - which you can't really do on the gamepad whilst moving around in 3d at the same time.
I haven't even started Galaxy2 yet but from what I understand, Mr T. Yoshisaur Munchakoopas needs the remote for his tongue.
For it to be the Galaxy games they'd need substantial reworking of certain game mechanics. I doubt they'd bring out a new game that requires the old remotes.
WWHD happened, but the aiming in TP would suck without motion control and SS would probably be off the table too, I don't see it's mechanics translating to the gamepad.
I just don't see them bringing out remasters that use remotes, or are so greatly reworked as to not need them. This might rule out Metroid Prime Trilogy too, as MP3 would ned reworked, and from what I hear (I'm just about to play the Trilogy having only ever done MP1 on GC) they work best with motion control.
We just had MK8 so I'd scratch off F-Zero too.
Sunshine maybe, of something pre-wii era (Waverace, Eternal Darkness, Luigi's Mansion). Also, could the gamepad be used as bongos???