https://photos.app.goo.gl/kEJMXgrYX8AGi7rE7
I would love to see injuries having a bigger impact. This image is from a game in 1932 which means no helmets he will be out for 10 months with a fractured skull and come back like nothing happened. Something like this should drastically alter his career if not prematurely end it.
It would also be nice to see injuries accumulate if a guy has numerous concussions or knee injuries etc it should start to show in the injury tendencies and again possibly alter his career.