We talked about this topic for quite a bit in the Shoutbox, but there isn't a thread made yet, so feel free to leave your character predictions here, whether they be fairly safe or really outrageous.
I think the following characters are likely to make the cut this time around:
Decidueye
Spring Man/Ribbon Girl
Rex
Ice Climbers
Alm/Celica
A Fire Emblem 16 character
Somewhat likely:
Crash Bandicoot
Rayman
Wolf
Maybe:
Dillon
Pipe Dream:
Isaac
King K. Rool
I think the following characters are likely to make the cut this time around:
Decidueye
Spring Man/Ribbon Girl
Rex
Ice Climbers
Alm/Celica
A Fire Emblem 16 character
Somewhat likely:
Crash Bandicoot
Rayman
Wolf
Maybe:
Dillon
Pipe Dream:
Isaac
King K. Rool