Perhaps a Karma system needs players to be aware of whatever Frontier intends to be 'within the spirit of the game'?
What I mean is: Frontier touts 4 main roles within the game: Trader, Bounty Hunter, Explorer, Pirate
I've not ever seen Frontier tout the role of : Murderhobo, as Beseiger calls it in this thread, for example.
Over the last 3 years I've got what I think is a fair assessment of what Frontier wants the 'spirit of the game' to be, but that's just in my head and I don't know if it's right or not.
So Sandro, maybe it'd be a good idea to write a small dissertation on behalf of Frontier, defining what the 'spirit of the game' should be, from Frontier's point of view? That way, players can gain a better understanding of what is and is not considered good or bad gameplay.
Another example : Frontier creates more content like the Ancient Ruins sites. Along come a bunch of exploration-fitted ships, with players wanting to team up and do Science! But here comes CMDR Rabid Murderhobo, who sets about destroying all the exploration-fitted ships parked there, and proceeds to chase and toy with these Science! players who are running around in their SRV's. Eventually CMDR Rabid Murderhobo destroys those SRV's.
That has actually happened, and more than once. I'm not making any judgement call on that - I merely describe what I have observed happening.
Would Sandro/Frontier consider that as being within 'the spirit of the game'? That's what I'd like to know. My point being that introducing a Karma system also needs knowledge of what Frontier considers being within the 'spirit of the game'.
Also, in the above example, Sandro, which I have witnessed with my own eyes from various Twitch streams of the perpetrators involved, this happens/happened outside the bubble, in Lawless or Anarchy systems - how would a Karma system cope with such a thing?