Will certain unit types have different air capacities based on need?
Good question! Check out the next update: viewtopic.php?f=18&t=3999
what about the dubble hatches - do they work as a air-lock to maintain access to the airless part with the cyo without blasting the remaining air into space?
The word "Double Hatch" is misleading, its just a larger hatch to be able to bridge a gap of two tiles
It will be interesting to reach rooms that are not pressurized though. Its dangerous to be too close to a breach when a room is pressurized - so if the room is very small, you have to depressurize the adjoining room as well to be able to get to the hull breach. I am working on that right now.