we need more ap items with critical strike

So what you're saying is give us more Trinity forces and make things like Kog'Maw, Corki, and Ezreal over the top stronger than any other ADC? The point of those champs is be strong one way or the other, but you want them to have the best of both worlds and crit all the time while their spells blow you up? I don't think you thought that well through or at the very least are being very biased about it.

if you are playing an ap adc, your playing a caster essentially, prolly poke. You dont need crit chance