Some idea at 7/10:
1. I know Shiolp has a real body at somewhere in game, and the real body always escape to ceiling when end of the day. Here's some suggestion, the body jump when jump to the ceiling, it looks doesn't matter jump from where. So, my suggest is, let the main body come out and disguised as another, and this disguise keep walking like another normal.
2. Similar to the first point above. The purpose is to do more action, like abduct the girls directly and drag into the locker / lure the girl inside / stop the panic girl etc. Also you will be in danger if the guard noticed you.
3. Similar to the second point above. You can do more that when you not inside the locker, disguised as nurse to help another one for "body check" / disguised as kanban girl to increase the flow of people in the area / "abducted by your locker?" etc. Disguised as special one to gain the trust for you.
At last, a strong suggestion, hopefully this game can be selling in Steam platform. Steam is allow the game with adult content, also selling the game in Steam can be more easier to promote.