Let me go back in time to fight in the Oranbega and Mu war.

I would love to see content where your character could go back in time to around the Mu'Rhakmet Rebellion or later. Maybe even a mission set on the day when Mu surprise attacked Oranbega with sky ships. A mission arc that would take your character back through the major events around the Oranbega rise and fall seems like it make a great basis for a signature story arc. Especially if it contained the possibility for earning some CoT themed costume parts, auras, pets, etc.

That would actually be pretty cool. I'm not entirely sure how the arcs would play out though. The Mu vs. Oranbega war doesn't really have any good guys which would make it hard to find someone for Heroes to side with (Villains could happily help either side in exchange for magical power).

True, I was thinking more in terms of a Cimeroria like setup where you have a whole zone dedicated to it but with different Hero/Villain content instead of the ITF.

I would think a good place to focus Hero missions would be on protecting and warning the usual civilian / innocent victims of a war, like the common people of Oranbega. Vigilante missions could be geared toward 'offing' Mu agents in Oranbega before the surprise attack, than take on the tone of the CoT getting darker as they fight the desperate war. Rogue arc would have great potential if maybe it was about pushing the Circle of Thorns council to take the demon's deal in the first place. And the Villain arc could be about aiding the Mu from pre too post attack.

omg yes please.

It would be nice to see Ouroboros used more for 'historical' missions rather than just content rehash.