I’ve been thinking that each and every character should have bigger and better roles in these games. I think Rikimaru and Tesshu should be playable characters for Fatal Shadows with their sides of the game's story, and we should also get to play as Tatsumaru and see the stories of Wrath of Heaven and Fatal Shadows from his perspective. (Yes, I know he's playable in the Multiplayer Mode of Wrath of Heaven.)