I've set our CPU sliders to Charter's CPU set. I felt like it gave users a challenge to where they might lose. Depending on the goal of CPU games (some leagues want a virtual auto-win for the user due to opponent not being able to play, some want a challenge, etc.) you could adjust them to be easier.
Also with the new tuner update giving a noticeable bump to zones, I am probably going to drop our coverage sliders to start and see how week 1 games go. Everything is a little nebulous until I really get data. This is the uncomfortable fact most slider makers prefer to ignore.