So, how would you utilize the Maquis? Write it your way. While a proper crossover with Voyager is unlikely, if you can pitch it to Rick Berman and he approves, it MIGHT happen.
Your only stipulations are, appease Ira Stephen Behr, the Maquis storyline has to end, the writers are juggling too many balls, and one way or another, they need to end that thread.
From Memory Alpha:
So, what do you change about the Maquis, and the DS9 greater storyline with them?Ira Steven Behr decided to end the Michael Eddington/Maquis story arc because he felt that there were too many open threads leading into the sixth season, and he wanted to get some closure on at least one of them. Behr explains, "We were just desperate to finish something off. We had to finish a thread. It was necessary. We just had so many things. So I told them, 'We are going to end something and then not hear about it again'!" Indeed, Behr wanted to officially kill off every single member of the Maquis, but Rick Berman wouldn't allow him to do this in case Voyager wanted to use them at some stage in the future. As far as the Deep Space Nine writers were concerned however, the Maquis story arc was over. (Star Trek: Deep Space Nine Companion)
EDIT: Corrected Behr's last name.