I’m using Aeon and I’m happy with it, especially the auto updates since i now never really have to actively think about updating (just reboot when you can to get the new stuff). It has a minimal immutable base system and the recommended way of installing apps is to use Flatpaks from Flathub for GUI and distrobox for terminal apps (GUI apps can also be exported from Distrobox to be launched like all the other flatpaks). Distrobox even allows you to install packages from different distros in separate containers so it doesn’t really matter that your base system is openSUSE.
It’s not made for tinkering but rather to have one very similar configuration on all Aeon installs to make troubleshooting easier. However it is still in release candidate stage so it might be required to reinstall once a new RC version comes out or once it is released.