Maybe not all, but 3-4 of the 7 really is possible.
well, let's see.
Sure things: Maya, Tina or Big Syl, depending on who's starting.
Very good chance: Whelan, Angel, Seimone, Swin.
Why? Angel has plenty of time to add to her laurels, both in the pro leagues and as an Olympian. Whelan and Seimone could earn two Gold Medals plus another WBA championship or two, which would boost their already substantial resumes. Swin may already have enough to make it.
Unlikely: Asjha.
So I'd say 5-6, assuming we are talking Women's HOF, not the big one.