Ask to To Take the Black

In addition to being able to demand a trial by combat a prisoner awaiting trial (or even a prisoner of war?) ought to be ask to take the black instead of waiting for an actual trial. Seems in-line with how it works in the actual lore and it adds an additional strategy if lord is imprisoned. After all a trial by court or combat might find them totally innocent, or they might be found guilty, either way they risk death or loss of titles, but taking the black saves their life and ensures their heir retains their titles.