One of the ideas that I had concerning a transition into Generations was to have an episode of DS9 where the Enterprise docs there for upgrades and repairs, thus explaining, to a degree, but not that it was needed, the physical changes seen on the Enterprise bridge in Generations and possibly uniforms. I could see there being scenes with O'Brien, LaForge, Crusher, Worf, and maybe Data on the station and assisting with upgrades. Maybe even show Worf's promotion, but in a different way other than on a boat in the holodeck. I say all of this again with the thought that it wasn't needed, but it's just an idea.