I feel like if the two were ever released, they would be released in the same set. Then again, they have "met" before in KH, so that might cause some problems. At which point, its between Cloud and Sora, one or the other.
On a random sidenote, if it's gonna be a Square Enix character, I'm personally rooting for Adam Jensen CYBORG FTW
Go home megaman, you're drunk!
My Cloud Strife Moveset:
My Alundra Moveset: