A Fire Emblem Warriors would be nice, and I can see I'm not the only one who would like that idea.

Additionally, how about a Fire Emblem Beat'em up à la Soul Calibur?

And considering it's backstory, one could totally do a F-Zero Brawler.

I also had a concept drawn for a Paper Mario Strategy game (with Bowser as the main character, no less!) made some years ago. I wish something like that idea will someday get developed.

I'd like to see Pokemon branch out into something more interesting, say a MMO or something..

..but new genres should get new IPs

A metroid JRPG when you use Samus and other federation and mercenaries to infiltrate the pirates stronghold and so on, and a Star Fox strategy game when you control the full Lylat System armada and the fox team are your heroes

I think there should be a Metroid spin off with online co-op play, it should also have a mini game where 2 teams have to blast a ball in the opponents goal ;)

Didn't we kind of get that with Star Fox Adventures on Gamecube?

Metroid-they should make a 4 player, squad-based shooter

Animal Crossing-they should make an Amiibo focused party game

Zelda-they should make a top down, 3 player co-op adventure

Mario-they should make a Mario & Luigi/Paper Mario crossover

We all know Nintendo won't do these though because they never listen to their fans.....

Fire Emblem action rpg is the obvious answer.

Oh and The Legend of Ganondorf. NOW!

F-Zero has a large cast of characters... A fighting game with them 30+ pilots would be awesome. Urban Reign style comes to mind.

Golden Sun being Zelda-like sounds good.

I can see a Starfox RTS game. Splatoon could get a RPG game. Like Super Mario RPG. To explain more of the universe.