[sciurius]

Johan, I think you can do what you want.  Just create a collection for each project.

That is what I have now, but I find it suboptimal. When I change global settings while working with one collection, this may (will, has done) affect the rendering of the songs from other collections. File name and song names may clash, and so on.
Also, I want to have collections within a musical project, e.g. songs that are ready for production, songs that are still being developed, songs that are 'just an idea', and so on.

So I do hope the separate database feature is still on the list.