I'm now excited knowing Kog'Maw buffs are coming.
Seriously this champ just decimates everyone right now if you're kept safe. His early game needs a bit of help but me being the chump I am I run lifesteal quints so I haven't had any trouble yet. New rageblade is absolutely unbalanced on him like it is on a few other champs and it really helped early game out when I rushed it last game. Hopefully they don't nerf it too bad as it's a very nice item on Kog'Maw. I worry about the AOE disappearing since the item is extremely cost efficient and helps out waveclear as much as the old tiamat did.
All that said the buffs have me excited, but also worrying as they're hot fixed. It could break him pretty badly if not done right especially if rage blade isn't nerfed.