this game is SO GOOD.
i thought that some things would be cool, maybe having different endings.
like, you could fall in love with her someway and she would calm down and having some type of creepy "happy" ending where you kiss or something like that, or maybe you could kill her in one ending, or also saving your friend someway, i think that would be cool!
and maybe you could put some new type of traps, maybe some wires that hit you and slow you or something like that.
or also different types of walking by her, maybe with some tics at the arms or at the face/head.
you could also add a mode where you are chased (and loved, even if the yandere doesn't want other people, maybe they could be sisters or something like that, i don't know) by TWO of them, but maybe the other one with different hair and eye color (like purple for example) that would be so cool, and also very very difficult to play ahahah.
and i think that a little lore would be really cool!
also, when you put the shoes they are kinda bugged sometimes and in the intro, her fingers pass through the knife, but it's not a big deal, you can fix it kinda easily i think.
maybe for the escape also, you could try to call the police finding a phone and the batteries (like an old phone), so you have another way of getting out, and when you get able to call the police (also cause the police works at night so it would make sense), you just need to survive until they arrive (for like 5-10 mins or i don't know), but she will get a huge boost, she will maybe one or bishot you (it should have some rates like 75% oneshot, 25% she lets you survive with like 25 hp), her speed will increase, she will be able to hear all the stuff and she could start screaming (not too loud, but in a very creepy way) sometimes, and her eyes could "open" pouring blood from them, and the mouth should open too, but smiling a lot .
otherwise, you can just escape by the default way.
And i also think that at random times, after some time, if you are slow in finding stuff etc... she could start having that boost, but not that powerful, so you can experience it even if you escape by the default way. maybe everything would be dark and you could see only the eyes and you can only have a little field of view for the stuff around you while she walks faster all the time until the boost ends. (like when she catches you and brings you in the class). and you could put also a different ost, like the "bass drop" scary one, but more anxious. But this should last for only 1-2 minutes, and she doesn't need to be that powerful, it's just for making the experience in game even more creepy!
Tell me what do you think about this! ^^