Almost a Masterpiece
I rewatched this film after years and was surprised by how much I liked it versus my previous viewing. But I think there's one thing that could have elevated this film from great to a masterpiece. Omit the entire wormhole sequence. Imagine the climax of the film, that brilliant buildup of tension and Ellie drops straight through the machine with a split-second glitch before she lands on the other side. I think this would make the hearing so much more interesting since the audience would want to believe Ellie as she tells us about the wormholes and meeting the aliens, but not have proof and the film would ask the audience if we believe her based on faith. Then reward us with the info from the confidential briefing just as they did in the film.
Just a thought, enjoyed the film as is.