I think a Mario Galaxy HD/3D pack might be a plausible candidate. Perhaps the next 3D Mario instead, that might happen.
Along with Mario Kart 9, which seems very doable, re-using the engine and assets from MK8.
Then some casual title along the lines of Brain Training, and maybe some lesser 1st party IP like Wave Race or something.
Nintendo Network ID: Cheebee 3DS Code: 2320 - 6113 - 9046