Kog'maw desperately needs a buff
I know he's the on-hit master, but, let's be honest.
He's an incredibly immobile adc minus the requisite damage output that would making being immobile be acceptable. If he will continue to be a sitting duck, simply up his damage.
That's all I want. I played him a lot lately to try to become great with his on-hit builds, but it's truly too difficult I lose a LOT with Kog'maw. He just needs more damage if he is going to be incredibly vulnerable. Reduce the AD reduction on his W, and you're golden.
..... he has ap scalings for free and he gets AS and ad on top of it, not fair for other adc's that need whole items to match what he gets for free from one item