One thing I will say about copying Shinkenger 90% of the time. Shinkenger had a serious problem with it's main villain sitting on his butt moaning that he was stuck in the Sanzu river.
He'd drink his saki and grunt as Dayuu or Shitari introduced the monster of the day. Then he would sit down.
That's probably the only thing I wish Samurai would improve upon instead of being a slave to the footage.