An extension that allows for gpu powered rendering and a more accessible way to import, edit, and make 3d models and textures, instead of jumping through loops and stuf, along with a camera control system, 3d could also work as it's own, separate editor from the 2d version to allow more advanced games to be made by less experienced users

There's a “Simple 3D” extension in the TurboWarp extensions by Vadik1. If that's what you're looking for, I recommend checking out the documentation for it over here.