The ratio of men to women who are at 1500 Elo in chess is like worse than 90:1, so no, you host an intermediate level tournament and it will be almost all men. Well, mostly boys but that’s current chess for you.

But it’s not just that. If there are no top women in any kind of leagues in chess, that will only further discourage women from participating competitively in chess in the first place.

Note that most competitive women chess players play in women’s only tournaments even though they can easily join open men’s tournaments as well. For various reasons, one being that these women’s only tournaments are where they have the best chance of winning or being in the top k for prizes.