Ver 0.95 update:
Rushing is still way too high. When I look deeper, 4%-4.5% of our runs are going for 20+ yds. The NFL median is 2.5%, so we're 60-80% higher. This leads me to believe (along with I'm sure all of our eye tests) that tackling is more the key issue than RBK. You don't want to drop RBK too low in a vacuum or you get a realistic YPC but what's actually happening is tons of negative runs + too many huge runs. That's not realistic gameplay.
Fumble rate too low, dropping to high 70s.
Passing is still high too, but with the changes to Tackle slider, I want to see how that affects RAC & passing before changing too much more there.
I didn't have time to update our sliders before wk 7, but these changes will go into place when we advance to wk 8 in a couple days (OP updated as well).
