If COH comes back I would like the downtime to be woven into the storyline.
You're introduced to a cutscene right off the bat. Radio comm signal loaded with static, from either Longbow or Arachnos, not to you but rather the search & rescue teams that have been dispatched to dig up the remains of those who were caught in the disaster from the rubble.
Wait, what disaster?
That's right, you blacked out the moment the Coming Storm struck.
You were buried under thousands of tons of rubble, but by some miracle managed to survive for god knows how long under fallen structures and other debris.
Your once great powers seem to have dwindled away, seems like the Well has nearly abandoned you.
As you get your bearings, you look up in the sky, and see a disjointed reality: The world as you know it has been partially merged with the realm of Ouroboros, one of the floating continents of that area now resting broken in the heart of the city. The sky is shot through with ribbons of energy, occasionally bits of that other realm fading into view before slowly disappearing.
It's up to you to re-awaken your powers of the Well of Furies, achieve new greatness and go back in time to set things right.
And oh yeah.
Your former allies?
They don't remember you.
Good luck.