As a roster guy its impossible to answer that question without knowing what is overrated in Madden. Its more a Madden question is what i am getting at as Madden is doing the converting. Once you can key what is causing the overrated aspects to the draft then NCAA guys could do the needed changes, assuming there is a set patten. If its not a set pattern then would be pretty pointless to try- Like a player a 80 on one try and 69 on another. Hopefully, you find what your looking for.
Update- i looked some into this- The draft didn't look too bad using my latest rosters (360) based on what i would have expected from the many posts about it. Tebow was a 81 which i remember people complaining about- went to the Bears for those that care.
I did see three players hit 90 however. Jenkins 91, Bradford 90 and English 91. The majority of names i noticed were in the 70s. I think only McCoy and Bradford were higher than Tebow's 81 at QB. Wells was the high at RB with 89. If those were constant i would think you could easily tweak them. If Tebow ranges from 81 to 96 (someone said they saw 96 in some thread) then i wouldn't waste your time. I hoped that helps.