My wish list is for the ability to purchase BitCoins. Right now, I have to pay over 5% to do so from RMB and I know that there would be a massive amount of interest in China if such an option were available. In the deposit option of the main dashboard, it used to say BitCoin deposit coming soon but I saw today that the blurb is no longer there, which bodes ill for this service. Hopefully they will create a wallet system that can be funded using BItGold, which would make BitGold my one-stop banking option.
My other wishlist is debit cards in other currencies. Being Canadian, when I go back home for visits, it would be great to use the debit card in Canada without exchange fees. As well, since the card is US based, I can not use it to set up in iTunes. I would need a Canadian card in order to do that. A debit card in Canadian funds would be fantastic.
Finally, silver deposits as well. The lack of monthly storage fees would make the implementation of gold-silver swap scenarios extremely attractive.
Hopefully BitGold will keep on expanding services and only get better and more useful in the future.