A Voyager movie might well have been good.
The story was over. What exactly would a Voyager movie be about anyway?
Endgame was the logical conclusion to the story started in Caretaker. I, for one, didn't need a season about their homecoming and lack of adventures in the Alpha Quadrant.
It would explain what happened between Endgame and Janeway becoming an Admiral in Nemesis.
Also what would have happened to Chakotay and Torres? Would they have been tried for their crimes in the Marquis? Or exhonerated for their services to Voyager?