I just went to see it last night with my wife. Overall, I enjoyed it. There were aspects of it I found kind of annoying, but seeing younger Nick Fury was a joy.
It was, sadly, incredibly predicable. I predicted the “twist” about five minutes into the movie, but that didn’t really take away from my enjoyment too much. Marvel herself was… okay. At times I really liked her, at other times she was kinda bland, but as I said above, Nick Fury was awesome throughout, and it’s worth seeing just for him.
I am a little annoyed that it looks like she’s going to be a linchpin character in Endgame. It feels like she’s being forced in more than added in naturally the way other characters have been. I just hope that the core Avengers are still the focus in Endgame. I like how it’s been set up to allow the original “first gen” Avengers to close out their story in a grandiose way, and I’m afraid that Ant Man and Marvel may detract from that. Still, there hasn’t been a Marvel movie yet that I haven’t mostly enjoyed (even Thor: Dark World), so here’s hoping.