If you're dominating Default All-Madden, I don't really think any of my sets are gonna be for you. Majority of my sets are for simulation style players. I make sets to try making the game organic and realistic as possible. I don't really focus on making the game harder or more challenging, I try to make All-Pro a little more challenging but I mainly focus on Realism. I try making All-Madden less cheesy and more legit and fair so I really don't think you will find any of my sets pleasing. It seems like your primarily focused on making All-Madden more challenging, you may want to check out Jarodd21, he may have something challenging for you.
If you do find a slider set you like, enter the values in main menu and in cfm.