I have always been discovering new things about Linux distros while distro hopping. And when I get something I really like, I just copy the package name and make sure I install it in every distro I use in the future.
Let me start:
- Clipboard manager (Gpaste)
- KDE connect
Everything NixOS (https://nixos.org) does. I am 99% sure that if anyone tries it out and gets comfortable with it they will never change again.
I am probably missing other nice things, but those are awesome already. It’s true that the learning curve it a bit steeper than usual, but there is no distro quite like it and even for non coders you can get a lot out of it.