Kaiten is pointless and is only a flavour animation and I've thought this from day one. There isn't a time you don't use it before an iajustu cast and all combos give 20 kenki. This change is nice. But the animation is pretty and I would hope they would make it so you would do the animation during the cast bar of your iajustu. Then you get to do the kaiten in spirit and do more shintens.