Koggy still needs a new Innate
This seems like pretty much the best time to do it.
Probably the simplest thing to do would be to move his W %HP damage over to his Innate. It already doesn't scale with his levels in W, so it would be a pretty good fit for an Innate and nicely typifies Koggy's identity. With the loss of his old Innate (which is strong but largely unfitting) that would allow kit power to be spread around elsewhere on the Void Puppy's more interesting abilities.