They can just feature them in Avengers 6 and have majority of the team with women. But an all female roster? Thats not gonna happen. This would be more realistic to me if Marvel Comics had a equivalent of Charlie's Angels/Birds of Prey/Spice Girls that they could easily turn to a movie. Even A-Force didn't last long. That moment in Endgame was nice, but lets face it, 9 of the 10 aren't headlining their own film or not the lead of their team films (gotg). Even if when are Invisible Woman, Storm, Rogue and Jean are introduced, the Marvel universe would still be a male dominated world. Its not exactly ideal but thats always been the case in the Marvel comics.