[MaskedRiderAsakura]

Updated list:

Series: Ryuki, W, Gaim
Main Rider: Hard to choose between Shotaro or Shinji, but I think I'm gonna go with Shotaro.
Secondary Rider: Ren Akiyama. Liked his constant conflict between his loyalty to Shinji and his mission to win the Rider War.
Belt Gimmick: Gaim. The whole idea of interchangeable armor is really cool.
Rider Design: Skull, Knight, Baron (any of his arms), Meteor, TheBee, Dark Kiva
Final Rider Form: Knight Survive
Villain Group: The Museum/Sonozakis
Villain Design: Weather friggin' Dopant. All the way.
Opening Song: Journey Through The Decade
Series' Score: W or Gaim's. I feel that both scores perfectly capture what each show is going for.