That sounds pretty good.
I'm looking at Leap, specifically since I don't want to have to update constantly, and don't mind a bit older software for those machines. I just want something that's easy to maintain and somewhat ready to use, even if I haven't touched it for a few months, and Arch just tends to break if you don't update regularly.
The only thing I need up-to-date is a browser and Discord, which I'll probably install via its own flatpak anyways.
It feels pretty German out of the box
I am German myself, and I'm not sure how I have to take this. 😅 Out of my mouth this could be both a compliment and an insult, depending on context.
A first look at their wiki makes it seem tempting. Low maintenance is exactly what I'm looking for, however I have zero experience with immutable systems (and I'm not even sure I completely understand what that means). Do you have any experience how well that works when using some proprietary software. For one of my use-cases Discord is (unfortunately) a hard requirement.