10:18 yes i wanted to tell you that bugs DO hit through walls and platforms and because of this behaviour actually open space is better than a hole in a wall they cant go through, because in case of a hole in a wall they will just hit you being outside of your reach
you know bulks and oppressors exist, making something like that means a big time loss when those two beasties would just demolish your work, dont try this on haz 4-5 or beyond it does not worth it