Here are my thoughts and ideas.
-1 to -100 is a simple escort to the jail with maybe a 5 or 10 gold fine. Then you are free to go, no actual jail time. It isn’t likely that a bounty hunter is going to bother with that as there isn’t any profit, however, some real gung-ho folks might want to remind those evil players of what might happen if they proceed upon their chosen path.
After that you break down everything from -101 to -10,000 and assign time allotments and fines
There has been a great deal of discussion about folks amassing gold and then not caring about paying a fine. I agree that this will be an issue. What I wonder is if we could tweak this a bit. So instead of being able to pay with standard gold, prisoners can only pay with, let’s call it fool’s gold (or whatever)
This is only obtainable by the prisoner when they opt to go out into the world and do PVE to work off their debt instead of doing jail time. At this point all normal gold drops become fool’s gold drops and the criminal can collect this to pay off their debt.
Furthermore, a criminal may enlist their friends to help them. These friends would need to come to the jail in which the criminal resides and sign up to help pay his debt. At which time all said players would be locked into PVE mode until enough fool’s gold was collected to pay the fine. Fool’s gold can’t be saved. Once the fine is paid any remaining fool’s gold that was collected towards a specific fine vanishes.
You should be able to work off your fine by working for the city you are jailed in. The prisoner could mine, make weapons or armor and contribute to the city upkeep. If this happens then perhaps there could be a chest in each relevant city building for prisoners to deposit the items that they collect or harvest. Citizens couldn’t place items in these chests but would be free to take what they needed, prisoners could only despite items and only what is relevant to each building.
Also when a prisoner is checked into the jail all of his personal backpack items should be removed and placed in safe keeping until such time as he pays his fine or serves his time. Anything he is wearing of course remains with him. If they opt to work off their fine of go earn it then they go out with an empty backpack (yes they keep their weapons) Why? It is just a little extra work for the criminal. They have to go get food and hammers and such again.
Anyway, this has been my 49cents worth.