Our format is unique. All real (not system mixed) deposits to your address are credited. You control your private keys and can sign messages. Your spending comes from different addresses.
What this means is it gives you the privacy of a shared wallet, while allowing you to do things like hold ASICMINER shares to your address.
How would this work? ASICMINER shares are issued/traded on btct.co and bitfunder so holding them in a wallet doesn't make sense to me.
I'm also interested whether you are considering support for other cryptocurrencies, in a similar manner allowing for offchain transactions where the recipient selects their preferred currency to deposit into their wallet.
Also, regarding security I don't believe it is sensible to show the 2FA secret on the account details page once 2FA has been enabled. This opens up potential for a CSS attack or loggers (keys + screens) to circumvent 2FA.
EDIT: Also disabling 2FA should require entering the code, a single click to disable 2FA is weak.