I feel like if they were ever going to do a fully 3D Pokemon game on a home console, they would have done it by now. If they're going to do it now in the future, there has to be a real reason for them to do it instead of it just being something that some people want.
I wonder... looking at the Wii U's install base.
How do you sell games to these people? As amazing as I bet Xenoblade Chronicles will be, is that a game that can sell well to the Wii U audience? And it doesn't look cheap.
Pikmin 3 wasn't particularly.
The Wonderful 101 certainly wasn't.
Bayonetta 2? I don't think it will be.
Not even DKCTF seems to be doing particularly well, even with it's reduced price point.
Maybe the fear is that a Pokemon game would end up with those games and a bunch of other bombs, but those IP's are either new or not particularly strong.
Pokemon is a really strong brand. It seems like before you put out a Metroid Wii U or a Star Fox Wii U, you might consider "reviving" a console pokemon spinoff if not only to lay the groundwork for the next-gen and hopefully a better selling console.
As bad as Pokemon Colosseum was, it was the best selling RPG on the Gamecube (1.85 million). And the Gamecube had a host of good RPG's too, so it wasn't like it was a wasteland like the Wii U is. They leveraged the assets they created with the first one, and went on the make it's sequel which was the third best-selling GC RPG (1.25 million).
Maybe that wasn't enough, but it sure seems like it.
The way I see it is like "Are the (typically) better sales of 2D Mario and (and it's fraction of a budget) a reason why Nintendo should give up on 3D Mario adventures? "