I see your point. From a purely balance standpoint, as you alluded to it would make more sense to push him in the direction with a higher win rate and more consistent play style as that would lead to less of a disparity between pro and regular play. As an avid attack speed Varus player, i would like to mention a lot of us prefer this play style over lethality but we’re definitely not in the majority.
It just feels bad to have the champion nerfed for a play style you dont support at a level you dont play at.
EDIT: i forgot to mention i feel as if you could still support his lethality build without it being his primary build right? Thinking something akin to Zac who has some ap ratios if you desire to play him ap but its an off meta build. Varus’ kit feels so chopped and changed right now. Why not had an AS scaling with his E? Or more on hit dmg on W.