I tested it a bit in a VM to get familiar with pacman and yay. Latest KDE Plasma 6 and more snaps in Ubuntu’s future are the main reasons I want to switch.
As I don’t use a separate home partition, I have an extra drive with BackInTime home dir backups and virtnbdbackup snapshots.
Is EndeavourOS stable enough for everyday use and would restoring home with BackInTime just work (as root user)?
According to Repology, Debian Unstable has ~40k, the AUR has ~90k, and nixpkgs unstable has almost 110k.
Where did you get those huge numbers from?
From the Debian allpackages.txt file which can be downloaded from each branch’s page.
https://packages.debian.org/stable/allpackages?format=txt.gz
https://packages.debian.org/unstable/allpackages?format=txt.gz