So I was reading up on some lore, I'm sure I'll be corrected, but it seems that the alliance war ends very soon after the white gold tower situation. Which is also what sends Ayren back to summerset to deal with the maomer attacks. If this is the case then the war in Cyrodiil needs to end. That could shape up some great new pve questing during the rebuilding of Cyrodiil, maybe some pvpve content. But it would most certainly need to be replaced by a solid new pvp zone/content