It may be a s*itty image, but I hope it makes my point.
the little "o"s are radio buttons. Users can only select one option. If they do not want to select an option, they can delete the URL.
This window might not be able to show regular expressions. At least I haven't thought of a good way to show them. So this window would just be showing *non reg ex* filters. Each entry has one of three options, Whitelist, Normal or Blacklist, and AdSupport list.
Also, having window appear on the context menu upon right click is, I my opinion, highly important.
Anybody else want to add feature suggestions to this post? If we get enough, maybe it'll get stickied (?)