Hi! How's everything?
I remember when I kept bugging you to add the portal poster. It's finally a reality now. Lol.
Firstly, you're doing fantastic! I were planning to make a poster or teaser for your game when i get home. The game is absolutely great right now! You've done an impeccable work. I don't wanna sound like I'm your tutor or something, but I do wanna congratulate you because I certainly know this game will become one of the greatest mods.
Secondly, I thought that I'd give you some suggestions to further improve the game, since there are still some small flaws/imperfections with the game.
1- The "REAL LOCKDOWN" is such a good idea. It immediately turns the schoolhouse from a silly little place with weird looking characters into an escape room. I think there are some things you can do to make it a little more challenging. You know how NULL and Baldloon can see you through windows and go through them? If you want, maybe you can make the intruder do that, too! Also, It probably is a good idea to deactivate the elevators when the real lock down event happens.
2 - If you have 6 notebooks and you get the notebook(s) on the 2nd floor as your final notebook and somehow manage to get Baldi up there, you can get down, use the elevator as your first exit and basically trap Baldi. You might think that Arts n Crafters fixes that issue, but no. When this happens and Art n Crafters activates, he only teleports you and doesn't teleport Baldi.
3 - In the android version, the gamemode panel is a little broken. (See the picture and you'll understand) 
4 - I saw that you listened to a guy that said the elevators should get deactivated in hide n seek mode. You should probably remove that 1 blue locker in hide n seek mode as well. It's so incredibly close to spawn and it's basically a free win.
5 + 6 + 7 - I'm truly ecstatic that all the innovative and original items in the game work perfectly fine. There is one small issue though. The new "unique" items, (portal poster, dirty chalk eraser, etc.), can only be accessed through Johnny's shop, and that is if you have enough coins. Additionally, the library is kind of obsolete at the moment. I will admit, I truly do love the idea of a maze that immediately goes silent to mimic what it's supposed to be that confuses both you and Baldi. However, there is no real need to go in the library in your game. Therefore, both the test and the library area are just random distractions. I have a few suggestions on what you can do to fix that :
● Add an additional notebook and faculty room on the other side, or inside the library.
● Scatter the new items, which as I mentioned are only currently accessible through Johnny's shop, all around the library. You can also make rooms in the library to make it seem a little more smooth.
● You have not used many of the decorations in BB+, (The round cafeteria table, the computer, the round library table, cabinets, etc.), so maybe you could place those in the library to engage the players to go in there
If you don't want to do any of that, you could add custom vending machines that give you the inaccessible items in the library.
8 - You could add a chat-room for people that are in the multi-player gamemode but not in an actual round. (the public and private play screen)
9 - I mentioned that the idea of a maze going silent to mimic what it is is awesome. One problem though. Your game doesn't make the audio in the library go silent. I don't know if that's intentional or not.
That's it! It's your own choice to add those or not, but I strongly think you should if it's not too hard or if it doesn't take too long. By the way, Thanks for reading all of that.