I played Smash Bros since the first one and i'd also love to see K.Rool. Don't expect it, though. Also i'd like to see a cool DK stage for once (i really didn't like the DK stages introduced in Brawl), but i'm afraid the Pirate Ship with Zingers is not going to come, either... At least Dixie appears in DK Country returns for Wii U, so at least her, maybe?
On another note, i was pretty excited about Megaman and while it's not a priority, i'm not actually against a second Sonic character (as long as it's a classic one and not some other Sonic clone from the newer games). Didin't like Sonic's moveset, by the way. Too many attacks looked the same. Also hope they give Bowser a Final Smash that is actually related to Bowser and give the Starfox characters different Final Smashs.
And finally, where's my Team Rocket trophy that causes Jessie, James and Meowth to appear in their baloon, laughing at the players? When the balloon gets damaged enough, it would explode and drop hundreds of Pokéballs while you hear them shouting "Team Rocket is blasting off again......!"
Then again, nobody cares what i wish for, so i'll just wait.