My review 4/5 or 8/10 depending on which scale you prefer.
To get the negative stuff out of the way I feel it was a bit long and jammed a bit too much in there. They probably could have simplified the main plot a bit and cut about 20 minutes off the run time.
The pacing was quite different than a standard cbm- and the action sequences seemed very far apart.
Okay, the good stuff. Very strong opening with the aftermath of the snap.
This film is about Tony, Cap and Thor - in that order, and they all have plenty of strong character moments and satisfying arcs.
Some fun cameos by past characters will make fans smile.
The final big battle is pretty satisfying and I didn't think much of Brie Larson in Captain Marvel but in Endgame she has a lot more presence.
For comparison's sake IMO Return of the King is the greatest final chapter to a film series ever ( and 11 Oscars back me up on that). Return of the Jedi is a fun, satisfying movie but not on a par with its previous chapters. I would say Endgame is more Return of the Jedi than Return of the King. It misses out on true greatness, but does the trick.