Hakham Ovadia Yosef and many others permit women’s megillah readings. The Gemara in Erchin itself says a woman is hayav in hearing Megillat Ester.
Most rishonim hold that women are obligated to read Megillat Ester and, therefore, should also be empowered to read it for others.
An all-women’s megillah reading would also alleviate a lot of the concerns with kalut rosh.