If it isn't already planned, it would be great to implement the figure of a nurse at the emergency department entrance that assign priority codes (red, yellow, green /priority 1 2 3) to patients. And patients with high will be treated first.
120 minute wait time in ER, ouch. Almost all hospitals in my state have wait times under an hour. The triage system looks interesting though and I definitely think it would add more depth and immersion into the game.