for that last part where you get on the tram, maybe connect it to a tram hub like the first area you get one in BM, but with that connecting to the main line, and using the maintenance trams instead of the basic (to explain why they are there, don’t think a cargo one makes much sense)
EDIT: paint idea for area right before tram exit, the area is a break room for the people that completed the hazard course, complete with a cafeteria and a arcade, map needs to be change a bit for a HEV return room (if possible)
(green)= guard buttons
(blue circles)= gaurds
(white circles)= scientists
( curved room) = cafeteria
(room with purple boxes) arcade
guards in room near last door armed with shotguns
EDIT2: added onto image
pink: trams (maintenance type not the cargo type (the one you see once)
orange: hologram spots
stars: black fade starts
room with green bars and orange diamonds: suit and weapon return room (must enter before leaving)