Jayce deals absurd dmg without taking any risk
I remember old times when it was enough to stay behind creeps to feel safe against his full combo. When he was missing his E+Q that could give you the oppurtunity to beat him. But now for some reason he just smash W in range mode and then transforms melee to deal some weird dmg. Earlier he never could save his W ranged AS buff during melee form (Q, 3 autos with the buff and E = 50-80% of your HP without E+Q combo. Freaking melee form for real!?). Low risk high reward type (I laugh hard when I see people complaining about Jayce skill based nature).
Seriously I can see some nerfs last patch and on PBE but I swear that would make him weak against some decent machups and still overpowered-tier against melee guys. Just remove this dumb W attack speed buff with modifier on his W melee form and we're done. 100% this would solve his problem. He benefits lethality meta too hard.
rip armor some extra movement speed and freaking shield which makes his squshy-ness issue kinda irrelevant (Low risk again for such unique setup).

. Haven't lost to a
yet with him.