For days gone by, what rooms do you spawn for entering the hospital? You can spawn them all because zombies will have line of sight on Rick and there would be no way of stopping them. Am I missing something?
Zombies spawn in every room except Rick's room. Rick's room only generates sound, there is no LOS (line of sight) rule. So, if team make more noise than Rick's room, the room is safe.
Second scenario is modified and have unique mechanism of zombies activation.