I see what you are suggesting here but it’s missing one important point:
*nix-based OSes aren’t supposed to be anything out of the box. I don’t want to appear to be a gatekeeper but specifically what makes any BSD/Linux install so good is that you should tailor it to your needs - which is one of my gripes about why “The year of the Linux Desktop” is a mere story told by tech-bros or bloated Ubuntu based Distros.
What could (and in my opinion should) be done would be to remove the entry barrier with less technical documentation and finally dispute that “GUI Applications are always easier” or that you need to be *more than a mere mortal * to use *nix. Quite honestly: Learning something new is intimidating but if your goal is anway to keep everything as it is, it’s simply not going to work.
Saying that it’s not more “welcomed in personal use” because of “you have to pick a keyboard layout” appears to simply reinforce that ill intended narrative of “Commandline is so complicated!!” and “Linux is for IT Professionals!” - both of which aren’t helpful.
I like the ideal of .app, but I didn’t read anything about the way they plan on managing shared libraries ( or not ? ), and how they plan to manage updates. On macOS and Linux, updates are managed via an “app store” or repository. How would that work ?
It leads me to my second question. They say that “Design is how it works, not how it looks”, but if you have no apps to make it work, what’s the good in having a new OS ?
Anyway, it’s nice to see some new projects with ambition ! Good luck to them