TOS mentioned that the entire war was fought without the benefit of viewscreens...that the Federation had never see a Romulan (by extension, you'd think they'd never seen a Romulan ship as well). Well, Enterprise had a viewscreen and saw at least 2 different Romulan ships.
The movie I'd like to see would be based on Deep Space Nine. Bring back Sisko with a warning from the Prophets about something.