I agree, the center nexus of the Horizon is honestly a death trap for any engineers trying to do damage control. For example, bad atmos from the hangar takes a single door opening to get to the upper levels/central ring, blocking a whole lot of people from being able to get to medical, security, or engineering without inflatables or a suit. Moving through doors spreads the atmos further, and before long you've got a list of atmos alerts that you need to scroll through.
I could also have a "go-off" about how Engineers not having access to air alarm remote control makes DC that much more tedious when you don't have a chief engineer or an atmos tech, but I will save that for another thread.