Not too much at the present. See HcoopVolunteerTasks for a list of things that could be done if you happen to be inclined toward volunteering for the coop.
Current
New Server Discussion
See NewServerDiscussion2013 for discussion about purchasing a new server to be a virtualization host
New Payment Processor
See PaymentProcessor2014 for discussion about setting up a replacement for Google Checkout
Old Stuff
Services Upgrade 2009
See Migration2009