Saw this at IMAX last night, theater was maybe half full at best. Maybe less. I did look, even though I wasn't going to bail on the work group that was going (and I got free Mexican and tequila before the movie, so it was worth it for that regardless), and there was a big NO REFUNDS thing on the IMAX email. You could only exchange it for another time. I'm not aware of the other Marvel movies having that stipulation, but maybe they did and I just never noticed.
Anyway, it wasn't as bad as I was expecting, but I place it firmly in my bottom 5, along with Black Panther (the lowest), IM2 & IM3, and Thor 2 (in no particular order). It was better than BP. The best parts, as stated, were Jackson, the cat, and the main Skrull. First ten seconds about Stan Lee made the theater dusty for me. I miss him already.
The SJW shit wasn't overdone, it was fine, and even less evident than we were lead to believe from the trailers really.
The biggest problems I have with the movie, other than Brie being boring as fuck, are 1) they tried way way way too hard to make her "flippant", almost like a bad Deadpool impression. She'd be in the middle of being fucking tortured or something and she'd make some joke that honestly would have sounded better if it were a "your momma" joke. It was totally out of place, constantly interjected, and obviously forced to make her seem light-hearted and fun. 2) is that there was never, ever, any threat to her character that worried the audience even a little bit. Her biggest "threat" was literally that she just didn't remember who she really was, and that they had installed a magic "limiter" on her neck when they first found her that kept her powers in check. Once both of those are gone, she is an unstoppable god. At least compared to anyone else in this movie, Thor could have done similar I'm quite sure, and even Iron Man for most things. But her opponents in this movie are completely outclassed, and she just mows through them like paper...except when they have to make the battle draw out for a few minutes and the "named" opponents stall her briefly until she realizes she can just obliterate everything.
In Man of Steel, even though we all know Superman is never going to truly lose (death notwithstanding), there was the implication that Faora (sp) or Zod could actually hold their own against him, possibly even kill him. In Captain Marvel, you never once worried about any of that. Even when she was "normal" someone would shoot at her with a plasma rifle, and she'd calmly look where it hit, look at the sniper, get a constipated look on her face, and then charge after them. No concern whatsoever that she might really get shot or be in danger. There was no question that she was going to dominate and overcome everything and everyone, period.
That lack of tension, and her terribly forced humor at completely wrong times, is what really killed this movie for me, not any SJW message. 5.5/10 maybe.