I've been mopping up some older seasonal content after coming back at the beginning of Season of the Lost and I just got the final quest for Season of the Splicer. After the Last City Override rotated out. I think it would be pretty cool if Overrides rotated daily, like how the Shattered Realm is currently, so that newer players, or unlucky players, have a chance to finish the content up before it goes away the 22nd.