Yeah I hate knowing is who will be good. For NCAA draft classes, they need to do a better job at translating the dratings, but then make the potential rating random. I think that would be perfect! Right now I think potential is based on the player's awarness in NCAA. And usually AWR is low, unless they're one of the top players at their position. Even then, in NCAA you can be rated 99 with AWR in the mid to low 80s. Because of that, they come into Madden with a low rating and potential.
Because of that, the first few years worth of draft classes will be low, but down the road, they should be higher due to players progressing their AWR in NCAA.