That requires the remote machine to be configured to SSH into your local machine. In the scenario where OP's project is useful (SSH to foreign machines) I might not want that.
On the other hand, if the remote machine is mine, it will have my config anyway.
There should be some way to mount a local directory onto a remote system without requiring the remote system to log in to the local system. SSH provides a secure bidirectional communication channel between the two systems. While we normally use sshfs to mount a remote directory to the local system, why should the reverse be impossible? Besides, you could also use NFS over SSH or TLS.