For those who have trouble with Mid Blitz. I'm here to give you a helpful tip
When you play those annoying people who hover over the center with a safety to screw with your blocking, and then drop back into coverage, you can actually make the OL ignore him. Pre snap you can press L1/LB and then Y or Triangle to untarget a defender. You will see a flame pop up which you can then move over to the safety hovering the gap and select him with A or X. This will make the OL ignore him. Now if you block your HB the blitz will completely get picked up