I would love to see a feature where I can check off a DDF post that is of intertest to me (same for a DDMS post for that matter). This will help remind me to which posts or threads I want to respond or take some kind of action.
Also, a geshmakeh feature would be if we could make a list with only those checked items. Even better would be if the items on the list would be in linkable form. Wishful....?