From what we heard about Astonishing I think that maybe all cast will have their own small solo stories in different places that will cross on some places and with one villain?
I think Soule is planning to do X version of Game of Thrones.
Really excited what he had planned for Gambit
If my guess about small solo stories will be right then i think we will have more then 1 artist. For example Gambit stories will be drawn by Clay Mann, Logan by Sorentino, Rogue by Larraz etc. So we will have a few artists on one issue.