In kbfs when I create a shared drive between you and me, the space is automatically available in read and write for both of us. Can this be done directly on top of hyperdrive or do we need to modify how hyperdrive (or the daemon I suppose) work ?

We can mount each others drives and collab that way.

For a full “union” mount experience we still have some research to do but we are working on it.

The mount setup is really good though and fully p2p