[tylerhall]

OP here. I think we're aiming for the same thing - though with slightly different priorities.

Of your list of minimums that DefaultApp omits:

Not every app adheres to a Document-based pattern. The apps I personally build typically fall into a "shoebox" style where explicit documents aren't used.

And there are other data layers than CoreData, which is why I didn't add that - especially since even with CoreData everyone has their own favorite library/framework. So that's easy enough to drop-in for those who want it. (That said: probably 95% of the apps I write use CoreData, so )

A customized NSToolbar would be great, but, again, there are so many implementations out there, which one would you pick that would satisfy the majority of apps/developers?

Anyway, like the accompanying blog post says, this project is "highly opinionated". It's just what I've cobbled together over the years. I'm not going to die on a hill for any of my particular choices. Do what works best for you.