First off, it was great. It was an amazing accomplishment to bring all of these characters together, like a call back to the great crossover story lines from my youth. Not as good as Infinity War imo but fitting end to the whole saga. Lots of really well done nuance that I look forward to reading all about here.
Plus Loki is BACK!!
I do have a couple of gripes/problems and maybe they will also spark some discussion:
•The Thanos Paradox(tm): if he traveled forward in time and got dusted, then THE SNAP NEVER HAPPENED. So how have the time branches been fixed?
•Way too long in the beginning. This movie should have been 2 1/2 hours, max.
•Hulk: not compelling at all.
•They know Captain Marvel but have to really on Bruce Banner experimenting with quantum mechanics? She has contacts throughout the Galaxy - doesn't she know a physics expert who could help out?
Minor quibbles really, except for the first one imo.