Voxels not being airtight annoys me
I recently came back to the game after quite a while of not playing, and started on the moon. I'm currently in the process of making my first proper base, and decided to go with a underground base (it looks cool, okay ?)
Unfortunately, I discovered too late that voxels didn't count as walls for airtightness, and therefore couldn't be pressurised unless I walled every single bit of the main tunnel with armor, and no mod exists to make them airtight. (from what I understand making them so would require completely rewriting the way pressure is handled)
IDK if that's planned to change in SE2, but I really hope they are at least aware of it as a issue.