IF his story is finally coming to an end after the Seige...
Just how should Marvel end it?
that Sentry is killed off when he is forced to stop the Void?
That he decided to go off inti Comic Limbo until furhter notice?
That he is shown being Beyonder/Korveck/marvel man etc?
That is just an imanginary figment of some higher power?
That he "burns out" his powers and is reset at Thor levls?
That he goes off into Soace?
As of now, Marvel could do any of those you listed. I previously thought that some writer would have to do a lot of work to clear up some contradictions, but it appears that Bendis is aware of all of these problems and is doing something with them. In sticking with the "unicorn" analogy from the first mini, I think it would make sense for Bob to be lost and forgotten again. If Sentry was going to die it seems that Jenkins should be the one to do it. It would be like letting somebody besides Pak finish that trilogy.