Asides from any shots of Odo morphing or the wormhole...And the first few seasons aren't that much of a change to their work on TNG now anyway.![]()
Well, the wormhole is *complicated*, but it's really only one external shot that gets reused every time (flipped for the Gamma side, middle part looped if it needs to stay open longer) and one internal/transversal shot that only shows up in two or three episodes and was also reused (both with the ship models shot separately and matted on top). Fairly equivalent to the built-from-scratch Crystalline Entity CGI model that was made for TNG HD.