Here is my list of suggestions I gave to cryptoxchange, ICBIT and that mtgox has just implemented:
-how many users are signed up
-how many of them active in the last 1/7/30 days
-how much fiat is deposited
-how much btc is deposited
-show volume of new deposits for 1/7/30 days periods
-show volume of new withdrawals for 1/7/30 days periods
-show all orders, all of them, none of the dark bs
-show us your entire profit history
-show us the entire costs of running your business
-show us everything, be as transparent as you can without it becoming a security risk
Of course the fiat part doesn't apply to you but the general idea of transparency does so I really hope you'll consider making a step in that direction. Cheers!
Very nice list of suggestions!