I think 0 is cheesy, streaks are over powered, speed should not be all that matters. 50 is balanced based on 40 yard dash times. I think 35-40 gives enough speed separation without making speed the only thing that matters. This slider also is responsible for footplants and movement. The differences are small, it's really hard to notice. If you really want to see differences than stand out, test it at 100,50, 25. Bewteen 0-25 and between 75-100, I don't see much of a difference, it's between 25-75 where you really notice differences.