Simple Twitch Changes to Delay His Powerspike
Even with adcs being strong in general, Twitch still seems above most of the rest. What I understood is that he gets his powerspike a bit too early and that his Q is a bit too good.
Proposed changes: Base AD: 55.5 --> 52 Q stealth duration: 10/11/12/13/14 --> 7/8.5/10/11.5/13 R bonus AD: 20/30/40 --> 10/25/45
Base AD nerf goal: I don't think his base AD should be higher than some of the other marksmen early. This should lower his early trades by a bit. R bonus AD changes goal: this should make him spike a bit less from levels 6-11, while keeping his 16-18 about the same. Q stealth duration goal: make him a bit more vulnerable in lane, as well as lowering his mid-game pressure with less stealth duration.
With these changes and the ardent censer changes, I think he would be put in a more reasonable spot. After that, we could see if he's still too strong or not (or even if all of this together was too much).