All the things ypu said abouy GNOME and OpenSUSE I will give a +1. It really is polished and tweaked to be reliable. YAST is truly a great way to onboard to pinux withouy having to drop into CLI to configure things. I don’t think it is 100% Vanilla Gnome there are aome subtle things like OpenSUSE nautlius has a paste button, where as NixOS excludes this. While keyboard short cuts are OK, sometimes you want to just go into the hamburger menu and click paste without having to find white space in the list view to right click on. I have run it for about 7 years now, every distro upgrade has gone smooth.