To lose emperorship you must lose EVERY Keep in the center of the map (all 6). For campaigns like Dawnbreaker this probably won't happen for a looooong time. I understand being emperor should be hard to get and incredibly rare, but I sincerely hope they look at tweaking how to lose emperorship. Maybe losing half the keeps is more realistic? Possibly swapping Emperorship to the highest score in the alliance in a set time period? I don't know, does anyone else have any suggestions?