As I run openSuse and plan to introduce it to a few friends who want to switch: where did it go wrong for you? What pitfalls should I be aware of, that I might be blind to by now?

Done, thanks for the Videos!

Same here, but for only 1 year on my main machine and 6 years on my laptop. I looove snapper. It saved my ass so many times

Yup, I use Fabfilter and native instruments stuff

Looks interesting, I will look into it. On first look it seems useful

Caffeine does not wake you up. It just hinders your brain to accept more sleepy chemicals, which means you only ever stop getting more tired. If you think “but coffee wakes me up!” Think again - does it really, or are you just normally drinking it, when your body wakes up naturally? For best effects, caffeinate yourself, when you are most awake.