After the Dominion War, it would be hard to imagine the Cardassians be allowed to retain control of the once contested boarder planets (or any previous conquered planets).
Any maquis who had lands on those planets could return to them, return home, rebuild what they had before.
After the dust settled, Voyager would return to regular Starfleet missions, new crew, new captain.
Janeway in time achieves the rank of Admiral.
I think that venturing back to the Delta Quad would be pretty far back on the back burner for the Federation. There are much closer star systems and undiscovered species to go to first.