Funny you mention Watt he's a guy I came here to mention, straight up beast and would be rated over 100 if there was no cap. I'm thinking of getting him in the 1st and seeing if I can get Megatron in the 2nd, I've seen McCoy going in the 3rd.
I know RBs are easy to develop, before I bought M15 I was playing M25 with M15 ratings and was going to do an all joystick team of players like McCoy, Kaepernick, and Harvin/Patterson/D Jackson/Watkins etc at WR.
I haven't done a franchise with McCoy yet and have done plenty with guys like AP and just did one with Morris so I want to do one with an elusive back.
Also many young backs don't have good enough stamina and I don't want to have to wait to the offseason to move them to FB to up there stamina and move them back.