Not sure if this has been mentioned before (I couldn’t find anything related!), and it’s something I’ve often thought is missing from sandbox games … We’re often given the ability to mine raw solid materials from the worlds we inhabit, but I’ve not seen a game that grants the ability to collect / harvest different gases - either from the world itself or to a lesser degree from various plant or animal life.
It would be nice if this was possible, as gases could take on different colours and effects and thus have different uses, such as in building materials, in weapons (i.e. stun grenade), or in healing etc.
It would also give us another tradable resource and possible profession - Just a thought anyway!