Allow the banker to act as steward for a region with no lord. This would help with part of this situation.
Potential for abuse: you could run a realm with a single character. You appoint yourself Tyrant, Duke and Banker. You appoint yourself as lord of different regions of your realm in turns to build RCs, temples, adjust taxes, etc. You use your banker ability to move food around, and you set all taxes to 100% to collect all the gold to yourself.
