I started a thread back in December:
Perhaps someone more persuasive could make a better argument. To be clear, I do not advocate for all last place finishers to drop more that the designed 2 brackets. The Guild that finished last in bracket 5 is currently winning bracket 7 on XBox. I know this because they kicked our butts on Brown Day.
But Guilds that score 0 points in a war should drop quite a bit. I would think that all it would require is to use the method for promoting bracket winners, but in reverse. We once jumped four brackets even while finishing second. So 8th and 9th place guilds that also score 0 should drop like stones as well.