how about writing about future with 2 chibiusas (future and present) kousagi and asteroid senshi (amazoness quartet) with their own names on earth e.g. like sailor moon is tsukino usagi and so on of about how shitennoh returns as normal humans and senshi fells in love with them...
What about the sailor senshi got a new transformation called supreme starlight power make up with, chibiusa grown up ,and finding a new sailor senshi sailor sun!