The great thing about Hines/Cook is both can line up in the backfield or go out wide as a WR. If used properly it can be a dangerous thing as defenses won't be able to key on either one. That said neither have the size IMHO to be a short down back that can get a two year run with defenses expecting a run, that's when you bring on a bigger RB (I like Chris Rodriguez Jr from Kentucky as a 5th Round pick). Or take out a WR and get a blocking/short yardage TE.
McGee was our best return man ever.