It would be a huge disservice for Bethesda to have put out Shivering Isles just to say, "Well, this didn't happen." or, "It was some nameless npc, not the Champion of Cyrodiil." Letting people get invested in a story just to rip it away from them is a terrible decision.
So much so in fact that it'd be a bad business move. I'd definitely think twice about purchasing future expansions.
So much so in fact that it'd be a bad business move. I'd definitely think twice about purchasing future expansions.

