Odo says Starfleet is unlikely to send a Slipstream vessel to return him to the Dominion. I think Starfleet could see value in taking the time to return a stranded head of state home, especially when he is a stabilizing force for the Dominion.
I re-read a few passages last night. He doesn't really tell Sisko much about the present state of the Dominion, and in fact, pointedly declines to tell him about the sundering of the Great Link, apparently because his grief is keeping him from wanting to get into that right away.
I can see him wanting to be in/near Bajor while he mourns, and then returning via slipstream to continue his work. Perhaps I'm just missing something, but I don't think there are any more major stories to tell for him in the Alpha Quadrant, and I don't know that I really see him becoming a major force going forward.