Oh definitely, it'd be an utter travesty if those [and more, like DKCR, for example] don't get stages!
Heck, I still want Paper Mario as Mario's new rep [though I don't really trust Sakurai to make it so]...
Don't think DKR, Mario Spinoff [X] and Blast Corps will get stage rep [or a mention, even].
Wuhu Island [replacing Delfino], SMG1/2, KI: Uprising, Letter Box [replacing PictoChat]and new Sonic [hopefully SS!] stage[s] will definitely be there, though.