Okay, so I have an idea for better version of Security Breach:

Things from books (only Tales from the Pizzaplex):

It would have all the things that are mentioned or introduced in the books. Every atraction and animatronic introduced here will be present

Who would we play as:

I think that much better choice would be Cassie, introduced firstly in Ruin. She is in Escape the Pizzaplex and she could be searching for someone (similiar to ruin). Not Gregory, but someone else. And she is a better choice bc her dad is a FazTechnician

Completely new lore of this game:

Cassie tries to find someone. It would be cool if one of the missing kids that disappeared in the Pizzaplex was her older sister Eve, so yeah, she would be searching for her sister. She tries to avoid the animatronics while searching. They would have damaged programing, but not controlled by Vanny or Glitchtrap. They would be controlled by GGY. The only animatronic on her side would be Roxy (I dont think I need to explain why, we learned that in ruin). Cassie would search for security badges to reach lower and lower levels, every single one of them she explores. She would find her sister in a really deep level, where the FNaF 6 location is. Eve is turned into an animatronic and when she sees Cassie, she doesn't recodnize her and attacks. Cassie has to survive and after some time (maybe three minutes of dodging and shouting at Eve), Eve finally realizes. Then they try escaping the Pizzaplex...

Side quests:

They would not matter to the lore, but it will be an extra thing the player could do. Like maybe finding dead bodies, meanwhile searching for evidence about the disappearences. Or maybe searching all shorts of objects.

Animatronics:

Glamrock Freddy, Glamrock Chica, Roxxane Wolf, Glamrock Foxy, Glamrock Bonnie, Montgomery Gator, Tiger Rock, Happs (from tales from the Pizzaplex #2), Lally (from Tales from the Pizzaplex #1), Sundrop and Moondrop as separate animatronics, DJ Music Man, and pretty much everyone from the books

Some of the animatronics cannot leave their themed location, to make it a bit easier (counts for DJMM, Lally, Happs, Monty - yes he will not be a part of the performing animatronics and be just a side character in Monty Golf, and the rest of the books' characters)

The name of the animatronic sister can change and don't judge me, It's just my idea 🙏