Things I like (nothing particularly spoilery)

Rating: 8/10 (24 April 2019)

It treated the audience as savvy enough to not have to over-explain problems related to their heroes endgame strategy; as a shorthand they just referred to a few movies enshrined in popular culture
The climactic action scenes ticked all the boxes for a good fight: The Shine, the Cut-off, the Hope, the Double-down, and the Finish. There were literal cheers from the audience I was in during The Hope
Callbacks to previous movies: Proof that Tony Stark has a heart, Kill Mode Activated, the Elevator scene (and its surprising resolution)
Iconic shots uplifted from the comics (the "farmer's" scarecrow)
Completed character arcs stay completed
If you're out of the limelight for 5 years kids won't know who you are and won't want a selfie with you