1. Custom animatronics:

Yes, custom animatronics FNaF Septalogy Fusion will probably have this function when I learn loading and saving images into the game.

You'll be able to in game edit mechanics of your own character & texture and implement it in game!

I want character to be a file to make importing character from other players to another easier.

This option may be hard for me to make but I'll it eventually.

2. Gooby Frooby's shop (Marketplace):

To add to the game more replay ability I'll add a shop!

Depending on how hard night is you'll get more money to buy power ups, skins & offices.

3. Custom Office

I like customizable things you see, so why not add a function to add your own homemade office or from the internet.

However you may ask: "How do I know where doors will close?" so you'll be able to move objects like: Doors, buttons, shockers, desk and showtime stages.