Wade isn't leaving. He's not even on any mock boards at this point.
Those mocks haven't caught up yet. I have read a couple of scouting reports that have him as a second rounder. WHEN he submits his name he's going to get, at least, a second round grade, unless he gets hurt. If he continues to play, the way he has, his stock is going to shoot up. He hasn't played in games heavily scouted, there aren't many NBA prospects in conference this year.
How much could a potential great run (Sweet 16) led by Wade bump him in the draft? Does a run like that help a guy much? I honestly don't know, I don't follow the NBA or the draft closely.
It helps in terms of they're seen more. It's not unusual for a player to make a meteoric rise, after a tournament run, like it is with coaches. All it takes is for one or two scouts to be bullish on a player to give him a push. Patrick O'Bryant and Harold Arceneaux are two who stand out.
Arceneaux "The Show" remember that guy from Weber State who went off against UNC back in the day and upset them? I think it was a 3-14 game, anyway dude went off, had like 38 or 39. Everyone thought he was going to declare, he didn't because he didn't get a lottery grade but he was going to get drafted. He came back and Weber State had a shitty year and he didn't get drafted.
O'Bryant was Curryesque in which he had back to back good tournament showings, but Patty's was as a sophomore and junior. He did declare and was a top 10 pick but was never good in the NBA, I'm not sure he started one single game. He's now in China or something.