IMO the DS9 and Voyager crew were due a film of their own. I too dreamed of a feature film featuring the three casts, at least one last one. A joint mission, using the best qualities of each captain.
Vulcan Logician wrote:
...but with an intertwined plot (A Borg-dominion alliance, perhaps).
Both the Borg and the Founders shared that "bringing order to chaos" mindset but a Borg-Dominion alliance would just be the Dominion's assimilation, but that wouldn't be bad idea either. A Changeling-Borg queen would be terrifying, they clone and assimilate. How would Starfeet stop that?