Hello Andrew,
Thank you for your feature request. If you can tell us how you would like the filter implemented, we can add it. We have a "filter" input box on the list.
Other than the "filter" input box, please let us know any other suggestions that you have to sift through your items. Once we get to working on a particular section, we like to do all the related work at one time.
We try to be very responsive for issues and feature requests, so please let us know what specifically we can do to improve your experience.
bidslammer