Can we please do something about Kog' Maw?

This may sounded salty, I don't really care.

First of all, what is his role suppose to be here? Late game power-house as in what sense? AD carry or just mainly playing AP. Last time, I check marksman, he is suppose to be marksman, not some stupid 1 trick pony mid lane.

My bronze friend literally play him only and since there's no answer most of the time, he just raise to gold 1. Is he good? He is okay but in no sense of what i believe deserving to climb up there with a one-trick pony.

I understand the fact that dive him and ccs are all you "need" to take him down. However, most of the time, a Kog'Maw with some level of common sense will know that his poke range is stupidly high.
At late game, without needing many kills, a poke from him could take 30% of carries health bar off, assuming he doesnt build Luden's Echo.

Do you guys think we need to do something about this champ? Personally, I think of all the old champs, he is one of the biggest f***** up. He needs a nerf or at least define his role a little.