Another interesting thing - and maybe this exists - would be if there's any kind of comparative data between the NFL and the CFL. Given the differences (wider/longer field in the CFL, more pre-snap motion in the CFL, 3 downs vs. 4 downs, etc.), it would be interesting to see if per capita injuries to different areas (head, body, etc.) are different.
It's still hard to believe the CFL has the goalpost on the front end zone line - that's got to result in unnecessary injuries.