An idea to take the randomness out of crits
I know a lot of people around here don't like crits, mainly because they are random, however a few people like crits because RNG is OP. Out of curiosity, what if riot make Crits work the opposite of Ashe's passive? Every time you attack someone you add your crit% to a counter. When it hits 100%, that AA crits and the counter resets.
RNG gone, building crits is still valuable, and you can plan around it.