I found an awesome balancing suggestion for adc
AS and Crit should be separate,that way you either hit hard or hit fast! and everything can be balanced around it! if u want to hit fast ur hits wont be as strong (say around 70% as strong as it currently is) but u will attack very fast and vice versa not sure if it is a good idea but I like it!
Credit -the person who came up with this (read it a long time ago,forgot who originally came up with it)