User blog comment:UsoppThePotato/An idea for critical strikes./@comment-4956864-20131002202203/@comment-6301771-20131003143717

No suitable replacement? How about more AD/AS items. Bruisers can't use them as well as Marksmen because they need tankiness to get within range and survive long enough to do damage, but ranged champions don't have that problem.

Have you noticed that of the five AD/AS items in the game, not one of them grants an AD higher than 30? Do you know why that is? If there was a high AD/AS item, crit would get completely out of control. Consequentially, we have BT which is more or less the only high AD item other than IE worth getting, which grants obscene sustain and makes CC required to get the drop on ADC's late game, meaning positioning is less important as late-game they can just sustain through an enemy's damage.

Crit chance may have been the crutch of old ADCs like Tristana and Ashe who need it to deal any actual damage due to their kits, but nowadays with champions like Quinn, Lucian, and Jinx, we have ADCs who don't NEED crit chance, which I think is a sign that the mechanic is being removed. And thank god for that.