Soul Calibur: I'll start with the game that should work with the remote the best. Imagine using the nunchuck's stick to move the character around and the remote to swing the weapon freely, using a button on one of the handles to jump, and other buttons along with remote movements to trigger special moves you can't do just by swinging at the other guy's face.
Mortal Kombat: This game has been confirmed but noone knows how it will control. It won't be the Mortal Kombat I want. The game I want would go back to 2D, now with scrolling FMV backgrounds (like RErebirth and Zero) and all the power focused on the two 3D character models. Players would dual wield remotes. One dpad would move the character old school style. The other buttons, like Soul Calibur, would be used with the remotes' motion tech to trigger special moves. Your swings with the remotes would by default throw punches, and holding the B buttons would allow you to kick with the remotes. Wounds would remain the whole match. If you slice someone with a blade using the remote, the wound will appear where you swing and how you swing. If you just hack into someone, your blade will get stuck in them; depending on your weapon you might find you have to pull the blade to cut with it like a steak knife.
I want to go back to the gritty aesthetic the game took when it first came out.
Street Fighter: Possibly the greatest challenge. This game can't work with 2D sprites and the remote. I would want it to be toon shaded, 3D, and using two nude remotes. One dpad would be for your 2D character movement, jumping, and ducking. Up and down on the other dpad would move you along the third dimension during the fight. Your swings with the remotes would by default throw punches, holding the B buttons would allow you to kick with the remotes, and you would use other buttons to to trigger special moves allow you to puppeteer the character's limbs when doing something like throwing a fireball.
Super Smash Bore: Nintendo has come out and said they won't use the remote for SSB. I think they could do some cool things with this game and two remotes (it is 2D). When you get the hammer for example, you could really swing it. When you throw characters, you could actually throw them.
DBZ: I would want this game to control like Street Fighter, but using a remote to fly.
Everything should be online.
And it would be nice to see an original fighter as well.