Forum:How Do You Think the Castiel episode will be handled

So it was revelaed that sometime in season 12 we will get a episode that will focus on Castiel's past and my question how do you think the writers will handle it.

I would like to Castie's garrison come back Anna (who acted as his superior) Uriel, Balthazar, Hester, Inias, Bartholomew. This also begs the question will these be flashbacks or will he just talk about his past? Cause if is flashback's how would it work if James Novak didn't say 'Yes' to Cas yet and I know they won't show a blirst of light with wings talking.