If the Gotham City Sirens movie also gets off the ground, that might be the perfect time to bring Commissioner Gordon back onto the silver screen.
If J.K. Simmons isn’t included in The Batman, he could potentially pop up in another DC project set in the present.
With Renee Montoya appearing in Birds of Prey, the GCPD could potentially become a larger presence in the universe as well.
Gotham City is becoming a major setting in the shared universe with projects like Birds of Prey (And the Fantabulous Emancipation of One Harley Quinn).