Nintendo + SquareEnix/Disney = Kingdom Hearts: Mushroom Kingdom
Nintendo/Intelligent Systems + SquareEnix = DragonQuest + Fire Emblem (already kinda doing this, but I mean a Wii or DS full game that is an epic RPG)
Nintendo/Intelligent Systems + SquareEnix = Final Fantasy Tactics Console Sequel (including the Fire Emblem Universe)
Nintendo + Blizzard = Pokemon MMO (would play this for days on end)
Nintendo + Capcom = Pokemon RPG For Wii (like Monster Hunter)
Nintendo + Bethesda or Bioware = Pikmin or an New RPG
Nintendo + Capcom = Super Smash Bros. vs. Capcom (or just include Capcom characters in the next smash bros.)
Nintendo + Sega = Wii F-Zero
Nintendo + Factor 5 (or someone!) = Wii Star Fox
Nintendo + Sega = 2D WiiWare Mario vs. Sonic platformer
Nintendo + HVS = Mario Paintball (Mario FPS)
Other games that I don't know who Nintendo should team up with for (or hell, do them on your own):
Smash Bros. Portable
Donkey Kong Country 4 (WiiWare)
Kid Icarus Wii
Currently dreaming of: DKC4 or Sonic the Hedgehog 4 (classic 2D platformers) for WiiWare, Smash Bros. for DSi, New Super Mario World for DSi, a Wii remake or true sequel of Final Fantasy Tactics.
One down, hopefully more awesomeness to come.
