Many people does not know how to make 3D models and 3D models cannot be easily found for free on the internet.

But pictures can easily be found. So my idea would be to have a small editor that would convert a picture as a flat 3D model like if it was a miniature made of folded cardboard.

This way, it would allow people to easily add model to the game by simply using pictures.

You could give the option to add a transparency color to cut white space around the picture and make the outline follow the shape of the picture. Which mean that instead of seeing a flat rectangle you will see a flat custom shape.

What do you think? It's probably not very hard to do.