My top 3 are very interesting characters that I want to learn more about. Has Kaguya become unstable from insanity for being alone all those years? What is Shikieiki's power in action and does it have limits? Sakuya's relationship with Eirin and Kaguya is a REALLY BIG "What I want to know," but if Zun were to do that it'd be an entirely new game.
I took that thing last month, top 3 was Kaguya Houraisan, Sakuya Izayoi/Shikieiki Yamaxanadu, Sakuya Izayoi/Shikieiki Yamaxanadu. Sakuya and Shikieiki get ties a lot in those spots. Also, I don't get your top 3. lol