I have two suggestions about the interface and the behavior of firewall settings:
1) These icons in "program rules" appear very old. I remember them a long time ago from the older Norton products. Everything in Norton's interface has changed and looks nice and modern except these icons.
2) When trying to change program control's setting from normal to aggressive, you have first to turn it off and confirm that option and then turn it back on to aggressive. This is just one unnecessary step. This could be fixed by either moving the confirmation message to the event of applying settings or by making the rotation of settings go the other way when clicking on the green switch icon.