I don't like the idea because it somewhat encourages players to sit on large sums of money by withdrawing it into banknotes. The aim of the server should be to allow for players to make reasonable amounts of money, but also have ample opportunity to spend that money and make their game better for themselves. Apart from that, this also opens up new doors to scams, losses (Creepers OP), griefing, etc. and would just be a mess for the staff team to deal with reports, refunds and the whole lot.
