I'd like if the player had to have a trial for more serious crimes, like murder. Your speechcraft skill would be the deciding factor, along with the degree of your crime, as to whether or not you go to jail. Obviously this would be annoying if it was implemented for every crime, so petty crimes should just warrant an on-the-spot fine.
they should also havde an execution, if you go on a rampage and kill a dozen people, but then again theyd have to catch me, and id become, judge,jury, and executioner and say you can try.