TNG films tried to bring something extra? Could you elaborate?
For example: The Borg Queen. In one character, just by the mere fact of her being present in FIRST CONTACT, redefines a well-established TREK species. I'm not saying whether that was "appropriate" to this "species" or even to this story, but it was "something extra" brought to the table.
Another aspect was the ARGO, which I've already mentioned. There's a very vocal group of fans out there who hate this element with a Zealot's Passion, but I thought it so openned the doors for future STAR TREK incarnations. Away Teams can beam to a planet, but they have to hike it for mile and miles, even if they use a shuttle. It limits the story potential, making them walk. Vehicles like the ARGO and its capabilities would make Away Missions a lot more FUN to watch!
The joystick used to pilot ENTERPRISE in INSURRECTION was an addition that I thought was really cool. Always pressing buttons and letting computers run things takes away from some of the fun, at times. Like in STAR TREK II, when Chekov flips out that handle from the Weapons Console and keeps pressing the Doorbell on it to launch torpedoes. Showing the Human Hand having such direct involvement, over the computer, is just more interesting, especially in an action sequence.
There are other aspects I could mention, but I don't want this post to run for a page and a half. Suffice it to say that what TNG tried to do, even if it wasn't successful in its approach, brought more potential with it than relying on standard approaches.