Have you thought about trying oraeon's sliders. They are for AA. I've tried them out and they feel pretty good. Here they are:
Dificulty: All-American (ONLY USE AA, Varsity and Heismann will break these sliders)
Game speed: Normal speed
Speed threshold: 70 (with the new passing accuracy I increased to result in better coverage)
Quarter length: 11 minutes (gives 130-140 plays per game; real world)
Sliders: CPU/Human
QB accuracy: 50/50 (+/-6% per 10 change slider; consider 45 still but weaker teams are too low)
Pass blocking: 50/50 (pancakes increase but are not recorded by game engine; +/-1 second to pass per 25 points)
WR catching: 35/40 (gives expected 4-5 drops per game; may need 35 for CPU weaker teams)
RB ability: 55/50 (improved tackle shedding and speed improves RB performance)
Run blocking: 65/50 (effects YPC minorly but manages TFL; may need 70 but 65 for now)
--RBlocking Option: 95 (seems high but trust me they die otherwise)
Pass coverage: 50/40 (With threshold at 70 this is needed for downfield passing, blown coverage)
Pass rushing: 50/60 (+/- 1 second per 25 change in slider; effects beating blocks not pancakes; increase to 60 helps pressure CPU QB for shorter passes and decreased YPCatch also worse QB %)
Interceptions: 20/40 (gives about 1-2 interceptions per game; Human rarely intercepts now)
Rushing defense 60/40 (adjust outside running 0.8/10pts)
--Option Rush D: 60/20
Tackling: 50/50
FG power: 15/15 (something changed after tuning now is sometimes short)
FG accuracy: 55/15 (I use 15 for human otherwise I always make it; adjust as needed)
Punt power: 30/0 (gives bettern numbers but this slider is weak)
Punt accuracy: 50/50
Kickoff power: 20/0 (works but too easy for human to get a perfect kick)
Offsides: 90
False start: 100
Facemask: 55
Holding: 5- (Too many holding calls on kickoff and punts, this needs to be fixed EA; almost all penalties are on kicks which is just wrong; however this is the only way to get enough penalty yards)
Clipping: 50 (very common if 55)
Roughing passer: 100
Roughing kicker: 100
Kick interference: 65
Off pass interference: 100
Def pass interference: 100