Samurai have positionals?!

[Shurrikhan]

Shinten is such an ugly skill. So unsatisfying to use. I very much prefer Kaiten over it. Kyuten is so much more fun over it as well.

If Shinten stays while Kaiten goes, though, I suspect such will only be because Kaiten only has incredibly bound-up use while Shinten does not. You will only use Kaiten before Iaijutsu and you will never, short of failure, use Iaijutsu without it. One could therefore argue it's nothing but a Kenki and weave-tax, rather than an actual ability (or at least, a decision to be made).