Yeah there’s a default AI selection based on formations. Or personnel, but for the 113 it’s nickle. There’s is downnfalls to the logic based the code we’re running but you can manipulate it. It’s not the best but I will run a strict 34 with a safety at WLB. You can mismatch it in the passing game but in general it’s solid vs the run and pass.
Nickle has a huge gap over the LG a lot . Very vulnerable to weakside runs if blitzes are not called. Really any D that doesn’t call defensive plays (non blitz) with proper gap protection will get toasted in the run game. Weak or strong you can beat them all with a different strategy as the 34 can get run on up the middle.
So take what you want but the regular 113 or 203 do well vs base nickel cause blocks had to be held longer to make up for differences in speed. Now it’s just overpowered....you can really see it on kick returns. Using big guys could be a thing. Size does matter a bit more at times but guys are still too slow based on weight
I don’t do rulees but 4.6 sees a need for them. Positioning and presnap alignments make for a set of mismatches. Blitzes do shut down the run if applied right but pass defense can suffer so to me there’s a balance. And I don’t think too small or too big is overpowered either. But mismatches are key.