Yeah, the TOS movies "felt" theatrical because each new instalment built upon the last. There was an escalation of narrative that made every movie important. Like a rich tapestry, the whole is enhanced by the exquisite sum of it's parts. I honestly think this accounts for their success. They expanded the scope of the Star Trek universe in ways that the television original couldn't.
The TNG movies abandoned that. While some broader things definitely carried through, it never once felt like the events carried any real weight, because each movie was it's own self-contained 'adventure', and one always felt the omnipresent finger on the reset button at the end of the movie.
The TNG movies abandoned that. While some broader things definitely carried through, it never once felt like the events carried any real weight, because each movie was it's own self-contained 'adventure', and one always felt the omnipresent finger on the reset button at the end of the movie.