In frontlines, the LB for Samurai is meant to just a troll tool. As there isn't anything deeper than being a samurai who intentionally goes where they shouldn't be to just try and get one or more cheeky kills. And I say this as someone playing the job.

Its actual kit outside of that is just: Soten + Hyotsetsu, or Soten + Mineuchi. Maybe Meikyo Shishui as a discount purify as some roots/heavys you and runs away, and if they don't stop running, its more likely Midare gets interrupted anyway unless you use the root or bind.

Oh sure it has Ogi Namikiri or Oka, but it feels really limp to actually do meaningfull things to them other than to be annoyance and loops back into Chiten gameplay. I gotten more kills with Zantetsuken (LB) by appearing to be afk in some place I shouldn't be than what the devs intended.