Sion, the Undead Juggernaut.... Not much of a Juggernaut?
Sion feels really really under powered to me. He has no reliable CC, and doesn't have that "fear" factor he used to have. He has nothing really symbolic that makes him who he is.
He takes about mid game to get itemization to be able to even do his role well, which is tank. He is pretty squish well past the 20 min mark. And doesn't really do decent sustain damage, or have reliable enough CC to even be viable pick anymore...
Riot, you ruined Sion...