I would love a world revamp and retail for going "back home". Maybe they could launch 10.0 with a remade EK at launch(or half of it), then 10.1 is the rest of EK. Then 10.2 is Kalimdor north, 10.3 kalimdor south. Wishful thinking.
Point is - I would love if they did something like that, back to azeroth.
BUT - We will probably get something VoidLazersCosmicForcesUnleashed kind of xpac.
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I know theres been opportunities previously in wow with a "reset" and a "wow 2", but this time with the jailer it feels so obvious. The jailer has next to nothing of build up, if we are to just "lul ez you failed, u dead now" in 9.2, thats going to be a huge letdown. We might defeat him in 9.2, but he wont fail his mission. Or something like that. I refuse to believe Blizzard just let us whack him in 9.2 already without him doing something that effects the future of wow.