One suggestion for mobile wallet: notification service. Let user select types of notifications he wants to receive about his account, such as trade happened, funds received etc...
Right now, when funds are received the wallet will sound the homer simpson "woohoo" and animate a couple things on the home screen, but you don't hear that if the wallet is closed. What I could do is have some sort of tsr running, as a wallet add-on that just checks for incoming funds, kinda like the gmail notifier. I will look into that. As for trades, that is a bit more than I want to add to this wallet. This wallet I just want to keep it simple and focused. In the future I might do a mobile wallet specialized for traders too.