This reply would seem out of topic now but...
Is a prequel movie about the Silver Millenium era possible? Like, I have seen a lot of SM fans' interpretion about Silver Millenium era and some of them are really amazing, it just make me wonder if an adaption of that era would catch some of the fans' attention or not
Mostly all we know about the character at Silver Millenium period are only from flashbacks and stuff while there're still so much thing to explore, like how the 4 Guardian Senshis would get along, training together in those beginning day (unlike Ami, Rei, Makoto getting to know each other by becoming friends with Usagi first, they past selves were a bodyguard unit assembled from when they're still little kids, I'm so curious about their interactions and relationship developments over those long years), their relationship with Serenity, Endymion, the Queen and the Shitennou, how Endymion and Serenity deepen their loving relationship, showing more of the Outer Senshis' struggle and loneliness while guarding their post alone, more specific of the battle between the Moon and the Earth which ended Silver Millenium (I'd love to see the 4 Guardians wipe out the Earth people with their magics more, how the Outer just only could stay outside and witness all that)...
OMG it has become a ramble about what I want to see if a prequel about Silver Millenium were possible but well, it's not really brand new content like Chibimoon and her Sailor Quartet squad, only expanding what was already there and the ending of Silver Millenium was also decided so... will it be more possible to have then...?