Besides Balloonerism & (eventually) Maclib, are there any other unreleased Mac albums that could see the light of day?

Asking this community since I’m not very familiar with his unreleased material.

I was pretty surprised when Balloonerism was announced, I had never heard of it and I thought Maclib would be his next & last release. Obviously we don’t want unfinished scraps frankensteined into a cash-grab posthumous release (and his estate would never do that), but are there other near-finished Balloonerism-type albums I don’t know about? Or are these two the final pieces?