I just can't wrap my mind around not liking Rakeem Cato. The game is so slow for him. He's out there directing traffic during plays while dealing with pressure, finishing off those plays with great throws rolling right or rolling left (especially left). He regularly uses his eyes to draw defenders to the flat so that he can throw to the sticks, or uses his eyes to freeze guys in the middle so he can throw to the outside. He's got a great deep ball, good footwork and shoulders. He's got an NFL arm. He doesn't just have speed, he's got exceptional elusiveness. And when he starts scrambling he ALWAYS keeps his eyes lifted looking to make the play using his arm first. And he's made some pretty fantastic throws, first downs and touchdowns that way. He's exceptional at avoiding hits whether it be making a decision to go out of bounds or give himself up to the ground on 1st/2nd down, or using his great body control and awareness to get small and soften the blow on 3rd down or end zone plays. He's second only to Jameis Winston on 3rd downs, no matter how you want to measure it.
He is what people thought they were getting in Robert Griffin.
But I at least agree that Devon Johnson looks pretty unique. There are some other seniors on that team worth looking at as well, Eric Frohnapfel and Chris Jasperse on offense, Darryl Roberts on defense. Everyone knows to watch out for Tommy Shuler already, I think.
Incidentally the Dolphins have just made their 3rd trip out to Huntington this year to take a look at Marshall players, for any interested. They visited in camp, were at the Miami (OH) game and are out there now to look at tape.