Well if they take out Toon/Young Link, they will have to buff up Link as a character as a whole. Unless by some weird trend Nintendo has another Zelda game in the works with a 2013 "Young/Toon" Link figure, which is why he'd be kept out of Smash 4.
My problem is, I want smash 4 for the 3DS since it's most convenient for me to buy, only problem is, all the inputs for a smash game will kill my 3DS. So it's not practical. I'm still not getting a wiiU, I can only imagine how one will be able to play that game with such a huge controller. Well, assuming you aren't one who's already gotten the WiiU-GC adapted controller. Thinking about it now, Brawl might be the last smash game I ever play. Like I mentioned before, Smash 4 isn't practical on the 3DS. I'm still going to buy it to give it a try, but I'm not going to put my hopes up or anything.