I predict that this will one day completely change how football is played or even end the sport all together.  It will take time due to the politics and economics, but it may come to pass and for other sports that will probably be implicated too.   I do not say this lightly, coming from a family that has played football (high school & college) going back every generation for about a hundred years now, including myself (high school).  I do sometimes wonder that some of the symptoms of CTE are becoming evident  for me at some level, such as I am more easily angered and have more memory issues than when younger.  Is it  my age,  diabetes, or even the creeping effects of CTE that I now have to consider?