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)?
Depends how you count it. Debian has between 120-200k apt packages pre-compiled for it on the various branches, making it the absolute largest overall in terms of readily-available packages.
If you count by source packages then it’s either Arch’s AUR with 85k or NixOS with 80k. But I’m not sure about these figures because both these repos have a low bar of entry and not all packages in there will work.