You mean embezzlement, right? Are you *seriously* arguing for the existence of a council position just because it can steal gold? That's pretty friggin' lame. Just pass a watered-down version to ambassadors, if you think someone really ought to have such a power, as it alone is not in any way justification for the position to exist imo.
bugger embezzlement... they take a chunk of the realm cut as it is without having to do much.