IIRC, the longterm plan (from Season One) for the timing of story arcs was that, if the show went seven seasons, the Romulan War, the reveal of the mysterious Future Guy, and the creation of the UFP were all potential stories for a series finale and a spin-off feature film. Scott Bakula's contract supposedly guaranteed him a feature film (though not specified as a Star Trek film). Had the show gone seven years, the writers still had several seasons to plant seeds. Trip's wink says a lot, I believe. Agreed!