You can already set a certain amount to withdraw or depost in bank by doing the Deposit/Withdraw "X" option. After you type in the desire number, it stays that way until changed. For example, if you want 28 charms, click the Withdraw "X" and type in 28, and it stays that way until you change it. And as far as finding a way to see all the commands if you click the "~" key on the keyboard and type "cmds" it displays every present command in game. We try and tell every new player to check out ::help when in game because it alleviates most of these questions, but not everyone pay attentions or listens. Hope i was able to help you out! But I also agree with adding other benefits to the donor zone!