I have never touched a comic book in my life, but when anything is rumored/mentioned or happens in the MCU, I do a ton of research so I know what I am getting myself into.
https://en.wikipedia.org/wiki/Carol_Danvers
**WARNING, MY COMPARISON** She is SORT OF like Jean Grey, in the sense that she has her normal form that is powerful (albeit a different skill set than Jean), then she HAD an ultimate form such as Dark Phoenix which is called Binary. I draw this distinction from a non comic nerd looking in, and may be flamed for the comparison, but that's how I see her. Normal level that's formidable, ultimate level that is at a VERY high level, not quite on par with Dark Phoenix though.
Super tough, super durable, can fly, can project energy. I would compare her to a flying Captain America that can project energy. Her origin movie will show us how she got her powers and show her learning to control them in the past, the end credit scene will be a present scene where she gets called into action, no doubt one of her sidekicks that we grew close to in the movie fades away into ash, giving her some motivation to stomp on Thanos.
Who knows if she goes Binary in the next Avengers or not, but also, who knows at what level Thanos is with his fried gauntlet and gems on the mend. Her going Binary would no doubt be rewritten as to how it happened, unless they really wanna get into the whole Brood and egg thing during her movie, which I highly doubt they will use that if Binary happens.