I know you’re mostly C4D users and afficionados here, but would it be possible to look into Ubisofts new “Mixer” add-on for Blender (horrible name for search optimization - especially together with Blender). Being that it is Ubisoft developing this, I think it carries a lot more weight than a random community project.
In short it may enable multi user/computer/application editing of 3D models in realtime. As the server itself is standalone from Blender, it may not be limited to Blender-instances if implemented by other software.
Browsing through the docs, this kind of looks to me like an early Syphon/Spout for meshes! Worflow-wise this would be fantastic. Something to look at as a feature?
Git-hub: https://github.com/ubisoft/mixer