Well I doubt we will get eye of aman'thul until we kill Guldan, which should be in 7.1, so thats what we got coming for us there.
As for after that I believe we will probably see some titan/naga/old god raid leading us to how to use the pillars of creation to stop the portal until the 3rd and final raid tier when we enter Tomb of Sargeras to shut down the portal.
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You don't think we will get a face-swap function?