The Toa Mangai had more than one female member, but they had 11 members in a team, which is cheating I guess. And more female characters in general are needed in Bionicle. so good luck with it.

Yes do it

Will you use only "female" elements, or use any elements despite Bionicle's canon? Personally I'd be eager to see the latter approach.

I hate the gender rules, so I'm definitely not limiting myself to those.

Well, that's good. Any plans on what elements, and names?

I'm not good with names. As for elements, we'll see as I go on. First on the list is a Toa of Ice.

I dislike those rules too. It's more fun to disregard them. Why can't we have female Toa of Fire or male Toa of Water? It's just FUN! :3

Also it might be fun to incorporate the element prefixes into the character names. Though maybe make them subtle, like the Visorak names.