if they continue the "Me too!!" PC-like games , I'll just buy them as dust collectors, like I did for the 360, outside a couple of games, I barely used the damn thing.

Sony:

Jumping Flash, Alundra, Wild ARMs, Destruction Derby.

Nintendo:

F-Zero, Star Fox (a damn console version please!)

Banjo Threeie

Skies of Arcadia 2

Legacy of Kain, Blood Omen & Soul Reaver still need a final games to end the storyline

Wii U - 3D open world Pokemon RPG. 1st and 2nd generation only, being able to play as the pokemon in battle would be amazing.

Edit: forgot it had to be dormant when writing this...

I'm going to echo what a few others have said, and say that if Microsoft had Rare revive a few franchises from the 90s then I would be there in an instant.

I would buy a new sega system for a new Skies of Arcadia..

Lunar! Give me Lunar 3, a sequel to Chrono Cross, bring me another Dragon Force game in English.

Already got Pikmin 3 and NSMBU on Wii U, so that's already a given. Already own a 3DS, next Nintendo handheld is a ways off, still.

Xbox 720 - Banjo Threeie. To be clear, I mean an *actual* BK3, not something like that stupid "Nuts and Bolts" game.
PS4 - I don't know... Lemmings, maybe?
PS Vita - Wait, Lemmings on PS Vita would probably be the better choice. Not sure there's any "dormant exclusive" that could make me buy a PS4, so failing some massive innovation or a massive change in the industry (like Sony buying Nintendo, or something absurd like that), or a release price that is exceptionally low, I think the PS4 won't be able to make me buy it.