Certainly some interesting things there, Neckbeard Torterra. Wouldn't've thought of giving Mewtwo a kind of grappling hook effect. He's certainly more than capable of doing it. (That was one of the attributes I was hoping he kept, some kind of telekinetic extended grab.
)
That Pressure ability is AWESOME. Mewtwo could seriously use that. If he were to utilize the same (or slightly boosted) stats from Melee, that ability would be a godsend in battle. Forcing your opponent to use other moves as their Pressure wears off is genius, and unique to him only.
Barrier... That was something I was also hoping he had. I shielded for the first time as Mewtwo in Melee and )': when I saw he didn't have his blue psychic force field from the 1st Pokemon movie. Though it does sound a tad off... certainly better than Disable or Confusion.
And, of course, having him beefed wouldn't hurt at all, either.
Mewtwo and Cut Company for Super Smash Bros. 4.
An added side of Deoxys, Darkrai, Rosalina, Adeleine and some others wouldn't hurt, either.