Turrets still too weak.
I witnessed a Zed with red buff, early game, absolutely delete 80% of a turret's hp. Mainly thanks to red buff, but without red buff, I'm sure he'd get at least halfway, since I think he had a Serrated which is slight armor pen.
Why did the armor/resistance buffs have to shred 500+ hp off turrets? Why can't they have 4k+ hp AND decent resistances? Imo, base turrets armor/mr should be at least 50 or 60 with a higher hp (back to 4k?). Otherwise, enough flat pen makes you able to deal nearly true damage as a melee...And nearly always, as a mage.
Their damage is subpar, but those ramp-up buffs a while ago did kind of help that. They just need better target acquisition at times when there's many people diving you. Aka, an Alistar that hits you once is tanking every hit while the rest of his team screws your day up.