What I would change:
For Freddy I would make it so that she would appear at both doors outside the hallways so that it can be unpredictable, changing this can make Freddy much more harder and wouldn't be exactly like how Freddy worked in FNAF1
Make the Doors and Monitor take way less power, On night one I near the end when I didn't close the doors that much (probably) I was near 10% on power, make it take less power.
Have Bonnie and Chica more aggressive, during Nights 1-4 Bonnie and Chica barely came to my doors, and when they were close they just didn't move at all.
Final Change: add a SFW mode, remove any nudity or NSFW artwork because it is really distracting for me I guess, or make the SFW mode a joke to prank people.
I'm sorry if I came out rude but this is a really well polished FNAF fangame and I really want it to succeed, again sorry if I came out as rude :)