I've been waiting all year to see Tenet and I was lucky enough to see it in our IMAX theatre in Melbourne. The film was full of amazing action and lots of reverse footage trickery but I really felt like there was a lot of unnecessary complexity (and macguffin chasing!) which ended up just making the movie longer.
Time paradoxes aside, the one big thing I think the movie was missing is heart. In the days since I saw it I've mulled this over, thinking of the parent/child emotional cores of both Inception and Interstellar and Tenet just comes up hollow.
It might be worth a rewatch just for the Easter eggs but I doubt I will look back on this film in years to come with the same fondness as Nolan's others.