what do you think?
would this be easy to implement in blender?
is it completely useless?

Very cool.

Imo everything shouldn’t be implemented to Blender, some things are best as side-programs, this is such an example.

I’d love to play around with this but I doubt that it will be free :[

I am quite sure that some stage this kind of software will be available as “free”. And despite that, there will won’t be many movies with this technology, as average Joe nerds/folks will just keep moving to the next thing they want.