My point was having one you can put it the base that's more than just decoration, as Rudra followed up with.
As for the rotation thing, I was referring to the point during leveling where you get a new power and want to see how it works with the others you already have, sequence, timing and such, especially with the powers that build a resource like Combo or Tidal Power. It's a minor thing you really don't need after a while, just when the power is new...