TBH I'd love having Lucario kick Mewto out. Really, IMO even Bowser and Pichu totally own him, the only thing he does well is throwing and, well, if you work together with someone you can make someone gain 999% dmg without that person having a chance to do anything against it (let the other grab the opponent, charge your regular B so it hits the grabbed person, and wait).
But Lucario's moveset riddles me a bit, I mean, he can use aura sphere as a shadow ball replacement, but disable/confusion/teleport are harder to cope with, so I do hope that his is totally different (and the fighting type gives plenty of option for that). Still should be kinda obvious he's different, I mean, traction?