Updated Secure Bag Design

Hi...I purchased the Helen bag recently and really really like it....but there is a serious design flaw that I've unfortunately discovered. About a month ago, I had my Isabel wallet stolen from my Helen crossbody. I had just bought groceries at and was leaving the store, when two men followed me and one easily removed the wallet from my purse without me noticing until it was too late (and then handed it to his buddy). I saw the whole "thing" afterwards on the store's video footage. Regardless, no matter how much I like the Helen (which is wonderfully soft and well made!) it is too easy to access by lifting up the magnetic flap. I have replaced the Helen with a Tumi crossbody that has multiple zippered compartments, but it's leather is definatley not the same quality as the Helen. So...would you consider incorporating zippers or other security-type features in your bags? I live in the suburb of a major Canadian city and the theft happened just after lunch on the weekend, so this was a crime of opportunity not of location. My Helen is now back in its dust bag in my closed, which is a shame!