People do realize how cheap ransoms get after 7 days, right? All this concern of being held in prison for 40 days is rather moot if you can pay your way out with about 10 gold on days 5-7. Now if there was a suggestion to decrease the rate ransoms decrease, I'd understand the concerns, but if you're still in prison on day 20 with this change, its either because the judge stole your gold, you had no gold to start with, or you *like* prison.
