Would it be possible for Sky Demon to unpick the notams for the Reds, Queens birthday flypast etc in order to provide a better display? For example notamed circles over individual display sites?

You should also see the dotted lines on your SkyDemon GPS, as NOTAM display is identical. The date/time filtering isn't, however, so you may just not be seeing a NOTAM because it isn't going to be effective in the next few hours.