You should add the ability to buy cameras and place them around the map while also being able to buy a handheld monitor to see through them or you can make it so that one person can hold a new version of the camera or even something to attach to there back that would display the footage on the monitor this could make it so that people could look around for monsters
Another thing you could add to the mines is instead of giving monsters designated areas have them rome around a giant section so that people have to plan out how to get to different sections of the map
Recording Cam - 299
Monitor - 499
Camera - 299