@Nightmare I do not want to remake WT to UO, I do not remember how it was karma system . Аt this stage the game is close to Darkfall.
Each system works some more effectively others not so. The systems are not to be observed by all, and by the majority. It's like driving. If the road has a limit of 80 kilometers. you decide whether to follow or not. If you want to drive with 200 OK, Nobody tells you with what speed to drive, but if drive over 80 you will be punishment. You decide.
Have to think of Golden Mean. Can not please everyone, but most...and these are PvE. But as I said and @Daniel36 very soon they got last level of development, it will get tired.
As for the problem with "peaceful" thieves.
Can always resolve. Yes more difficult than to separate servers, but if want the game to have a long life, separation is not the way...
In this zone, Players can not be killed unless they are punished (red name). Can be built only basic and small dominium. Buildings can not be destroyed. In this zone can not build some advanced buildings and siege weapons.
Thus new players are protected. Those who want to play PvE also have the option, but if they want rare resources must go to danger zones or to buy them from other players. Also, if they want to grow more, they have to move and build in other zones.
Player with dominium in this zone can not build and use siege weapons
If player with dominium in this zone kill someone, then its buildings can be destroyed, for a certain time, and he might be killed in the protected zone (his name and dominium turns red).
If player with dominium in this zone is killed by someone, for a certain time, he can kill, his attacker without its buildings become destructible. (his name remains normal) – revenge
if he wants to attack some castle, it must declare war, and must pass for example 48 hours before he can attack. By The announcement of war, his buildings can be attacked (during those 48 hours that he can not begin to attack). Also, after the war ends (lasts a certain time 48 hours), its buildings can still be attacked for certain time(12h). - All time is indicative.
With the declaration of war,he can build and use siege weapons. All time is indicative.
Buildings decay - Low
In this zone, everyone can be killed, but the murderer suffers punishment, if not proceed to no penalty. Can be built only basic, small and large dominium. In this zone can not build a brick wall ...
- Declaring war - after 24h can attack.
- Buildings decay - AVERAGE
In this zone, everyone can be killed, NO penalty. Can be built all dominium and buildings.
- Declaring war - after 12h can attack.
Buildings decay - HIGHT
For Yellow and Red zone can be added and other things. May in some zones walls and buildings to have more durability and so on. May have special buildings that are only for defined zones.
P.S. Of course these are all proposals, you decide what how and why