I'd like to see option within Filters to limit them to only function in select folders. Currently, if you create a filter it will be applied to ALL folders no matter which one, be it Inbox, Spam or whatever. However, if I want to create filters that specifically ONLY operate within Spam folder to make repeating annoying spam mails less annoying, I can't do that because the filters I will make will also affect mails inside Inbox when they arrive even though I don't want that to happen.