A Nintendo action RPG, good idea or bad?

[Recycle001]

So, the last few days I've had a hankering to play an action RPG on a home console. Something I can kick back on the couch and play with a controller without having to use xpadder or something along those lines. Some of my all time favorite games are Diablo, Torchlight, Dungeon Seige, Champions of Norrath, etc. 

While playing Smash 4 against a buddy, we got to talking about Champions and couch co-op being close to dead nowadays and just how sad that made us. Some of our best memories were hanging out at one anothers house and staying up all night playing Gauntlet or Champions or Dungeon Seige. Eventually it was brought up that Nintendo still offers a pretty robust amount of couch co-op content, but the action RPG is missing. 

Picture a bright, vibrant world similar to Kingdoms of Amalur or Fable. An inviting world populated with Nintendo's unique take on villans, monsters, and heroes. Whether it be populated with the well known goomba, metroid, moblin, or something althogether new is up to you. As long as the game is a solid experience, I don't care whether you perfer it to be populated with Nintendo characters or something althogether original. Imagine being able to explore instanced dungeons with a buddy sitting right next to you and having someone from across the world pop in to help out. Something that is easy to get in to, but with plenty of depth to keep you interested long term. 

Anyone else think that Nintendo's unique take on things could be amazing with this genere of game? Or that this genere of game is definitely missing in the modern era, let alone on the Wii U? Lemme know your thoughts.

*EDIT: Since there seems to be some confusion, I will try and elaborate a bit further. Dungeon crawling would be part of these games(as it was in all the games I listed above.) Character creation and class selection would be part of my original idea, therefore, Xenoblade, Pandora's Tower, and Last Story do not fit the criteria above.