I will reluctantly throw a monkey wrench into this discussion with the following observations.
1. If the design is to be made in color, there was an earlier design where the circle was purple with a yellow outline. I think this would be a clear signal to our intersex friends that we are their allies.
2. Maybe the gender-related colors of blue for boys and pink for girls is just a U.S. thing, but if not, and if these colors are universally used, perhaps the arrow at the upper right of the circle can be blue, the cross at the bottom of the circle can be pink, and the combination symbol at the upper left can be blue and pink. Otherwise, perhaps the male/female/trans arrows can just be black.
3. There was an earlier design with an adult hand inside the circle and a child's hand holding the thumb of the adult. To me, this spoke of compassion, support and assistance. Another design showed the two open hands (as if to say 'Stop!') INSIDE the circle. That was also good. However, the current 3 options show those 'Stop!' hands outside the circle and much larger. To me, this sends a confusing message. If one does not fully understand the context, could it possibly send the message?: "Stop the gender confusion!"
4. Sometimes simpler is better. Within the context of the motto "NO BODY is safe unless ALL BODIES are safe", I think that using the symbol (without any hands) within the word "BODIES" should be considered.
5. I also support Balashinsky's suggestion to say "unless" rather than "until". He made a good argument for "unless".