My issue with Runeglaive.
It feels like a placeholder until you replace it with Lichbane.
As it stands I see no reason to play any ap jungler over a sated jungler. Sated junglers bring way more to the late game as opposed to runeglaive junglers, hell even cinderhulk is a fantastic lategame item. But It just sucks that the ap jungle item got nerfed because one champion was able to make use of it in mid.