Something to add more challenge/reward in the later levels of the game, adding a hall monitor system and a Principal (or Dean).
- Hall monitors trigger once the shocked students surpass a certain threshold, say 50 - 75% of max allowed shocked students.
- Hall monitors have a wide vision range able to see all "lanes" of the hallway (from top to bottom of the screen) and can see behind them.
- When a hall monitor sees an abduction, instead of walking briskly, they actively run to the nearest (or furthest, if you want some chasing gameplay) side of the level, and report what they saw.
- If they successfully escape, the report adds a high number of shocked students, say 5-10. If you catch the hall monitor before they escape, they are corrupted, and the shocked counter goes down by the same 5-10 students, useful for when your activities are gaining to much heat and the cool down is taking too long.
- Hall monitors are identified by their sashes they wear across their uniform, and possibly a unique hairstyle such as a blonde ponytail
The Principal/Dean is a unique character that you may only see once per level and carries the same high risk, high reward concept.
- Similar looking physically to the teacher, although maybe with an increased bust size for visual representation of hierarchy, as well as wearing a black, business-casual dress suit.
- If the Principal witnesses an abduction, it's game over.
- If the Principal is abducted and climaxes, the player is rewarded with a large Fap points bonus, and a 30 second immunity buff where the shocked counter does not increase, due to the head of the school being corrupted and incapacitated.
- There are no conditions to spawn the principal, purely a very low random number counter, similar to rainbow hair girl, but perhaps even lower.
And something I just came up with while typing out the previous suggestion: Work the occult club back into the game world more.
- Maybe posters start showing up on walls and lockers in support of the club and the monster?
- Robbed girls start walking around school. They can't be abducted but act as visual shields for other girls in their "lane" in the hallway, providing you cover.
And of course, I also agree with many of the previous posts adding variations, fetishes, special girls, animations, etc., simply "moar content" is always better.
Perhaps toggle options for those various additions if some people don't like certain things, and fair enough, different strokes right?
There's tons of ideas that could be added, and some of them are more development intensive than others, but I hope you take into account all the suggestions throughout the development!