One thing I have seen no mention of at all is what type of atmosphere the various factions evolved in.The default seems to be Nitrogen - Oxygen, but what if there were Ammonia breathers or other theoretical Lifeforms. To follow up on this, what, then,would constitute a "Toxic Planet"? Toxic to whom? This needs to be looked at by the Developers. In the Planet Scan screen there is already an Atmosphere category. It would not take too much to add new or revised data to it.