Flash Review: A must for MCU fans, but don't think too hard

Rating: 6/10 (24 April 2019)

The Set-up
The Time Travel plot device to end the Phase 3 of the Marvel Cinematic Universe has been speculated ever since the post-credits scene from Ant-Man and the Wasp showed Scott Lang/Ant-Man getting trapped in the Quantum Realm.
Any time you use Time Travel as a plot device in a movie, it raises a LOT of questions on how paradoxes are avoided. BUT this is a Marvel movie, so we wave our Sorcerer Supreme hands and ignore things that would be scrutinized in a hard science fiction film.
So. Three acts.
First Act: The Stakes
To me this was the best part of the whole movie. We visit with the original Avengers, first a few days after the events of Infinity War, then again five years later to see how they're dealing with their losses. This is the difference between the MCU and the DCEU - the MCU spends time with the characters' motivations and the stakes involved. When they fight not just another meaningless CGI-laden battle. This act ends with the return of Scott Lang and the formulation of the plan to recover the people Thanos killed in Infinity War.
Second Act: The Heists
It's fitting that Ant-Man triggers this series of events, because this act feels like the original Ant-Man movie. Still a lot of nice interaction between the surviving heroes, and the environments that they visit. The act ends when they all succeed, but at what price?
Third Act: The Endgame
Of course there's a final battle to end the movie and the current Phase of the MCU, complete with transitions, consequences, surprises and all-out CGI action as only the Russos can deliver. It's a totally satisfying climactic encounter.
Epilogue
Periods and question marks for the characters that we've journeyed with for twenty-two films.
Post-credits scenes
There aren't any. Unless you count a post-credits sound effect, which could mean anything.
Reviewer's Tilt
7/10. Unfortunately I think about time travel plot holes too much, and this impacts how much I enjoyed the movie, so I docked it a point for that, but it's still a solid entry and a worthwhile end to this Phase of the MCU.