I wish they would just stop seeing it as male or female at Marvel. See it as Superheroes. I'm really excited for Captain Marvel to come along, and for her to be a real, living functional woman. But in a great story, so they can get over this fear of letting a woman be a single player in her own movie.
A significant failure on their part is this fear. The movies he referenced in the email, involved only one marvel character, and it was pre MCU. Without the advantage of strong planning, integrated storylines like they've developed for the phases of the MCU we've seen.
I know it's possible to have a nuanced female strong character in a story, for that I just look to the recent Playstation series Powers.
There they had Retro Girl. Who functioned entirely as a real living person, without consistently being forced into worrying about some male lead. It was refreshing to watch.
Same with Zora. She is an interesting character as well, but as a new heroine, with real powers and newbie skills. She felt realistic, and it was good.
So I know Marvel when they put their CEO's crappy fears aside, we'll get a real story involving a real female lead, who will kick amazing ass, and not be defined as a rom-com.. or something else. And I'll be happy as I've been watching the Marvel movies that have come along since.