CRACK THEORY TIME!
So, a while ago when the first promotional images for Revelation came out, I made this post commenting that Orko's new design resembled the Unnamed One, a villain from the Classics mini-comics.
Well, what if-
When Orko and Scareglow clashed during Orko's "great personal sacrifice", Scareglow's negative energy corrupted him and turned Orko into the Unnamed One? Orko's not dead, he's just not quite himself anymore.