How to Rework crit
Double the crit chance on all items but make it where there damage is 150% damage but you can go up to 200% crit chance and every 2% above the 100% crit chance gives you 1% more damage so it would work like this .
At 100% crit 2 items you deal 150% damage 100% of the time if you went 4 crit items not counting IE 50% increase you would get 200% damage add IE its back to 250% chance . Now on yasou or trynda other changes would need to be implanted example on yasou he would only gain half the bonus damage after 100% so he would get 1/4 his extra crit chance in damage which would be the same since he gets double anyway but his crit damage reduction would also need a slight change maybe bring it down to 140% everyone is 150% . I know all these numbers are not ideal but the idea is with the right numbers random crits would not be as game changing since crits happen twice as often and do less damage so trades would feel a lot less random overall .