I only recently imagined a role for Q, but I think adding him would be gilding the lily. The story would explore the nature of the Prophets, and I think including Q would distract from that.Q intervenes or sits on the sidelines with popcorn?
So, we begin with Jake Sisko grounded on Earth, unable to get an exit visa on account of some reporting he did after the war that has ruffled the feathers of someone in Starfleet Intelligence....