As a 3D artist I greatly enjoy using the threejs editor!
And I have seen many threejs projects that incorporate multiplayer.
I’d love to make the threejs editor “multiplayer” to allow more then one person at a time to work inside a project.
I know I have a lot of research to do! So I thought I would start in the best place I could, which is this forum! 
So if anyone has suggestions on what directions I should go in to make a multiplayer version of the editor, please let me know!!
My first guess would be to evaluating if one of the multiplayer solutions I’ve seen built with threejs would be suitable to get things started, then I’d have to enable selection of multiple object in the editor…
That’s where I’m at…
Looking forward to everyone’s thoughts and ideas