User blog comment:Blinded-Men/Possible Future DLC/@comment-5284153-20120712052542

Akiviri Invasion. That thing is still practically looming over Tamriel, and it would make a real good tie in that their leader Tosh Raka is a dragon, and that he wants to invade Tamriel. Most likely it will start in Skyrim like the last invasion and the Dragonborn will once again have to rise to the challenge to unite Skyrim in repelling the Akivir and beating/killing Tosh Raka.

Maybe have a larger questline with the Blades other than 'go kill paarthurnax' or 'let's go kill some dragons'