An idea about the crit hit issue

The problem is on how RNG makes the game less strategic by fishing a crit. What I propose is: make it more consistent.

Consider a chain of 10 hits. Let's say you got 10% crit chance, make that 1 ou every 10 attacks really crit hit, 20%, 2 of 10. By making that, the 20% will be really 2/10, no less, like hitting 20 times and not scoring a single crit. But what of those 10 aa's crit? still random. To cap the upper side of the chance, say you got 20% crit chance, and you hit the opponent crits on the 3nd and 4th shot, the next 6 ones will not crit, that is, until you end the chain of 10 hits. By doing that, you have some control and strategy over the opponent knowing that he already crit'ed and will not crit again, and even to the player itself that could cont the hits and know when he got more chance of it.

But that doesnt solve the problem of: a crit hit, all in!!. I propose to change how crit hit works making it a debuff: "expose weakness: your next attack against this target will deal double dmg; duration 1.5sec". By mading this change depending on the champ picks and reaction time, you can prevent an all in and play around the damage.

Only thing is, less than 10% crit has no value, but it's easy to adjust that.