Make a use for vBookie Credits!
What is the point in having a vBookie system if we cannot spend our credits on anything?
I love the betting idea, but meh, what's the use in it if we get no reward from the vmoney we have earned from gambling? It's pointless.
What I suggest is a vShop, I have seen this on other vbulletin forums I am on, and it allows the user to purchase some cool customisations with the credits they have, eg. coloured username, bold username, more customization with sig etc.