I'm not entire too sure that the TNG characters were meant for the big-screen, given the way they were defined throughout the show. They all seemed out of character in the movies with perhaps the exception of Generations
. I'm guessing TPTB required their cast to be action heroes in the films and it just went completely against their characters. When I see First Contact
, for example, I just don't see the Picard character I knew on the show... what with him shooting his phaser rifle all the time, performing stunts and leading away missions.
Dare I say it, I think DS9 might be better suited for the big screen, but given the way DS9 ended, that might have been difficult.