Should there be a crit counter?

And by that I mean kinda like Cait's passive where she autoattacks until her next shot is a headshot.

So let's say a marksman buys 20% crit. You'd see an indicator that the crit on the champion is 20%. Each attack increases the counter by 20 until the charge reaches 100 then that attack will crit. Would make crit a clearer mechanic instead of RNG.

Of course there are exceptions ( ) but their kit as are designed with a rule behind them critting.