I'm really can't wait for the per-doc permissions because I'm building something very similar to what you're describing and with CouchDB!focusing on the databas

I'm really can't wait for the per-doc permissions because I'm building something very similar to what you're describing and with CouchDB!focusing on the database and auth side first and then adding functions. So shameless plug if you're interested in signing up for the alpha: https://www.aspen.cloud https://www.aspen.cloud