Dear Riot: Is Critical Strike Going Away or Not?

With the release of Jhin and his crit scalings, it got me wondering, is crit becoming too widely used? It has been stated previously by riot employees that they wanted to remove crit or rework it in some way so that it isn't as random. Now that so many champions and items involve critical strike, how will they rebalance the game around this mechanic when it is changed? A significant amount of the marksmen rework involves critical strike. Why wouldn't they tackle it with the marksman update instead of going back and doing it again later? With champions like Jhin and Ashe relying on crit chance, reworking critical strike would require a nerf or rework of these champs depending on what the new mechanic is. It seems to me that riot is making more work for themselves down the road. I'm not trying to say that riot isn't doing a great job with league (they are and I enjoy it greatly), I'm just a bit confused that they're creating more reliance on crit instead of reducing it. If anyone has some insight on this I would appreciate it.