I guess. I didnt read whole thing here but. I have an idea about new tentacle locker.
Basicaly we have spawner type / passive type / normal one / smart one / quick one / forgetting one.
First of all forgetting one. I guess you need to change how it will work. I think that it is necessary to change the work of the forgetting locker, which is the idea. Now a girl passing by immediately forgets about everything that scared her and goes in the opposite direction. I suggest adding a small cooldown and animation of the fact that the girl is dizzy. - this will solve some problem related to the fact that if someone is grabbed next to the locker immediately after forgetting, the victim will immediately run scared again. It looks ridiculous enough. I mean cooldown could be nice thing making it look a bit more lively.
Also ideas about new lockers.
Sight gas : Another gas locker that will make passing girls sleepy / or it will cloud the view, it will cost 10 points, but for 5 seconds it will be able to make a smoke screen for the entire corridor or part of it. So it will have cooldown.
Main spot/hive mind. : An upgrade for the whole hall - as well as a capture mission. Now the halls are captured when you get all the lockers. But it would be much more interesting if, for example, you had to fight for a certain "Main Place" that would give some bonuses or just transform the place and make it "your own" (Maybe even add mini bosses like a milf teacher or a nurse as floor bosses who could do special things for diversity of gameplay.)
Bosses/ Special girls
I guess bosses wont hurt. For example every floor has boss to beat so you can capture floor all for yourself. (and they can appear after you clear your floor) For example teacher boss can spawn a lot of bellhops on duty who run fast and do not fall under the first tentacles, and in case of a threat immediately run to the exit from the level, or for example they need to be caught twice in order to win. Actualy can be intresting contept.
If you found something intresting comment, so i can write more ideas if you interested.