Okay so For the prisoner wing I was thinking of something like beginning holding block but move the door to the back and not randomly in the middle. Give them their own cafeteria and workout stations something more like a prison IRL to set the stage. Because walking through offices is fun but Why would you put a bunch of criminals next to low level personal. Also make it so that SCP-173's holding cell is not actually next to the offices and easy access to the rest of the facility, but actually have one or two other holding cells for testing SCPs on the D-Class. The rest of the Containment Breach would happen normally. but 173 would have to escape to the rest of the faculty through a gate that is around where the guards stand now, and exit through to the light containment through a clearance gate. It would be full dead guards trying to escape and be open conveniently for the player.