Your roaches do alright without much ventilation? Mine would not do so well in your type of enclosures, so I have screen vents on at least two sides and sometimes including the lid as well.
I'm the same way with my wasps, tons of cages. But unfortunately they need good sunlight so I can't keep them nice and neat on shelves like your roaches
I just seen the room, so sorry for the late reply, I like your setup, how many species do u keep? whats your fav? and what kind of containers are they?
Very nice and neat! My roach room used to look similar. Its a good set up to have the PC there, but you may run into trouble when your colonies get larger. Not just with the containers themselves (i notice tupperware for me without any screens tend to get very moist very fast).