kayle standard ap damage is too low
low play rate ,winrate proves nothing out of low playrate ,imbalanced ,very low subpar dmg even compared to supports who can carry way better on ap ,look at sona Q with basic /passive or maybe lichbane too
low kills / game 5 average no dmg no burst no dps
make 70 or 75% Q E 30 or 35% and E burns enemies % health or E hits stronger on target marked by Q or Q back amplify so that all builds are a bit better etc etc etc
or Q similar to viktor Q hits once ,then next basic attacks deals tons of dmg
harsh nerfs revert some 1% play rate kayle isnt urgot or galio or sion