Kogmaw feels undertuned
I don't particularly care about win ratios or anything like that. He just doesn't feel very powerful at the moment. Even in team comps devoted entirely to protecting koggy, I feel like I'd be better off grabbing MF or Vayne or Trist. His W doesn't feel like it's that empowering, and without it he feels short range and lacking in any good sterods. His ult feels alright as an execution, but the damage seems negligable in every other circumstance.
I'm not a kog'maw main. I used to play a lot of him, but not as much this last season. Still, he feels considerablly less powerful than he did before, and even more so less than the other Adcs.
was nerfed pretty hard,
doesn't give AP anymore, and just so much else feels like he took a really hard hit for no good reason at all. Plus he's not winning games when he's supposed to be. Theoretically he's a late game doom dispenser, but he actually falls off remarkably hard due to his low mobility.
scaling directly off of armor and him only doing 55% of his normal attack damage per attack. That means he is actually taking close to 30% of someone's armor per 1 auto attack worth of damage.