I think this would be rather difficult to do and may be too much work for the administrators to update periodically. Some ladies may change their status: for example, a transitioner may end up relaxing, a transitioner may end up going natural, or a natural may end up going relaxed. I think an indication of their hair status in their signatures is sufficient enough. If their hair status is not in their signature, it will be easier to just ask in the thread or PM the member.