So i went on and installed Kolibri OS in a virtual machine on my laptop with their provided manual on their wiki. Gotta love the amount of details and screenshots they provided for making it work.
First findings: super fast and very little system resources needed!
I configured my VM with 24MB RAM and 4MB VRAM, works like a charm, and boots from the floppy(!) image in around 5 seconds from the moment the VM window appears. In the OS i opened up system monitor and 50% RAM is consumed, meaning i overcalulated the RAM apparently?
I did shut the VM down and reduced the RAM to 16MB, but this gave me no background anymore, so yeah, 24MB is the minimum with a 1024x768 resolution.
The "could be better" list is (aside from ARM support) not hard to implement (based on what the devs achieved already):
If these things are there: it would be a big step towards feeling like a real OS instead of maker OS.
Now, to add my positive findings:
Final scores (based upon one day of experience on 15 april 2018):
As hobby OS: 9/10
As daily OS: 5/10