Competent but dour assemblage of familiar dystopian themes and tropes. As with most of these things, the projection of then contemporary concerns are as interesting as any exaggerations of a predicted future. It's rather more the son of Huxley and Orwell than a presage to Star Wars, although it's certainly the sour to that film's sweet in the small Lucas canon. Aesthetically striking if thematically hackneyed.
director's cut 'THX-1138' represents an interesting entry in Lucas' filmography showing us what kind of films he might have made if he had gone in an artistic direction instead of a commercial one. Technically impressive if lacking humanity (applicable here perhaps) the films antiseptic and bureaucratic future is a fascinating one.
By looking at the year of its release, main cast and the simple fact that it's a debut from "Star Wars" creator in a form of serious and existential sci-fi film - it comes as an underwhelming flick. Ambitious set designs are only redeeming factor in a movie that has zero suspense. Screenplay is made of numbers and letters that should build a plot while pedestrian characters are running from the point A to the point B
When Star Wars like holograms meet sterile like Aldous Huxley surveillance controlled world. It's more like a trippy ride around the aesthetics of such world than actually understanding it. The silence over the context drives the audience to assume some possible political elements though. With the timing of its released in mind, we can see some visual experiments to be improved in the following Star Wars series.