Please don't revive 2 month old threads by saying ''I agree'' & adding nothing of value to the discussion. All of those points have already been raised on this thread.
k01 said:
...just "multiple_females" and "multiple_males". Or allow for a "solo_female" and "solo_male" tags to exist so they can be used together with "group".
Here.
k01 said:
It's currently completely impossible (as far as I know) to specify when you want a specific kind of group based on genders like that.
See also: The entire thread.