Hey Riot, you know Kog wasn't actually a hyper-carry pre-rework, right?
I mean Trinity/BorK Kog here. Old AP Kog was arguably a hyper-carry. But you've decided to toss AP Kog into the dumpster, so we won't be focusing on that build.
His early game was shitty, his mid game was solid, and he didn't really get much better or worse late game. That's as opposed to an amazing early game that drops off (see: Graves) or a meh early game that scales exponentially stronger (see: Twitch). Since pre-season, Kog has eaten base stat nerfs in addition to the Ult change that wrecked his poke. This revert isn't going to turn him into a hyper-carry. He'll still be a mid-game champion, just worse than he was before. And he wasn't particularly great before, either.
If you guys want Kog to actually be a hypercarry it's going to take some effort on your part to pull it off.