I doubt this. The Romulans were around in the series trying dethrone other nations like weasels they are, but I don't think it was TNG's place to end anything with them. They're more in the line of TOS villains, I thought series should've closed the hostilities with the Borg. But they couldn't do that because Voyager was using them now so they would have conjured up another lame story with a new major threat so the warship Enterprise can fight.The tagline for the movie was: A Generation's Final Journey Begins.
Which leads me to believe their intention was to make a trilogy, in the same way that TWoK, TSFS and TVH were trilogies with events following very closely the end of each movie. Nemesis seemed to leave a lot of things up in the air that could have been addressed in a followup. At the same time, it seemed like a passing of the torch to Riker and his crew, and I think a followup movie would have followed him (seeing as we never actually got to see the Titan on screen) and explore the idea of peace with the Romulans, closing the book on a chapter in the process.
I would've preferred more of a peaceful, humbling tale where Picard and Co. can do what they did on the small screen. The movies would've been better off if Berman handled the TV stuff while a Hollywood producer dealt with the films. It was pretty surprising how fast TNG series ended so quickly but at that time Star Trek was pretty much overdone. There was too much Trek, and what was on wasn't the best on screen.