1. Playing defense looks impossible. Every video I've seen, the offense is overpowered.
2. The option mechanics. Going to have to unlearn years of NCAA/Madden option technique. Seems like a small thing but I know it'll be a big adjustment. Going to have to take some deep breaths the first few times I mess it up and get blown up in the backfield.
3. The kicking meter looks insane.
4. Wear and tear scares me even though I think it does make the game more realistic. I like the idea of it but I'm nervous about the execution. Guess if it really sucks you can just turn it off.