Idea for a crit rework

So, crit has been an issue for a while now, it adds to much of a raw steroid to champs (and in some cases an early crit can win a lane), which i feel is a little dumb....while it should be powerful...i feel it deserves a rework, so heres my proposition to rework critical strike

So, champs would critically strike on every third AA in combat (IE you cant just go and hit scuttle twice to garuntee a crit, but an initial crit could be garunteed by an item) and critical strike chance would be replaced with critical strike damage, so items like would provide 30% critical strike damage rather then chance meaning champs would critically strike for 130% of their damage every 3rd aa...additionally certain champs could be given unique modifiers (IE fury can give him up to 35% critical strike damage) and abilites that have a chance to crit ( alpha strike, E) could be given damage multipler based on crit damage instead....and it would possibly allow it to intergrated into spells aswell allowing for crit mages in the future while not causing these insane adc metas ( can literally 1v5 late game rn)