>>10234471Shinkocchou Seihou (True Bone Carving) is basically for giving updates to older series. Essentially 2.0s for SHFs. Their focus is making sure the figure looks near-identical to the in-show suit.
They're slightly bigger, better proportions, and better sculpt. Their only negative is coming with less, depending on the rider. For example, Den-O's Seihou doesn't have the hissatsu effect parts that the original has.