I'm gonna commit a heresy now...
But I think some of the lesser regarded prospects could be a fine answer at the slot position.
Yes, I, like everyone else, love Waddle... but you have to have fall back plans. ...and Rondale Moore is popular in some places, others dislike his size/injury history.
Take at look at St. Brown from USC. He's a bit taller, but he's a guy with quick moves and a sudden change of direction. Since he doesn't play in the SEC, he hasn't gotten the press of those guys... but the Pac12 throws the ball... and St. Brown looks like a winner.