SAM players are quitting

[RyuuZero]

Shoha II (Upgrade Shoha to Shoha II at the relevant level, make it a single target ability with aoe falloff like Paladin's Expiacion)
Hissatsu: Guren (Give Senei aoe falloff, same concept)
Tsubame-gaeshi's keybind (Iaijutsu automatically changes to Tsubame-Gaeshi when it would be possible to cast a Kaeshi Iaijutsu)
Ogi Namikiri's keybind (Ikishoten changes to Ogi Namikiri/Kaeshi: Namikiri after use, as appropriate)

And that's just stuff that could be harmlessly and effortlessly cut.

I think I'm going to explode
Shoha II is your AoE Option, that you use in AoE Situations, Shoha do you use in Single Target Situations! the PLD Skill change is something that I would explain with Tank Gameplay dumbing down even further because no one cares and the new skill looks flashy or Tank do not have to think about AoE and Single Target Situation, just get the Enmity!
same with Senei and Guren, Senei is for Single Target, Guren is for AoE.. my only idea for Skills like that to change would be to drop resource requirement for longer cool down skills, like Senei, Guren, Bunshin, ect. since those Skills can be used once ever 2minutes anyway.
Your Tsubamegaeshi Idea is something I can see, though there they should change it that Kaeshi Higanbana works alongside Higanbana and potency adjustments
and about Ogi Namikiri, I wrote a Macro that does just that and works just fine:

/macroicon "Ikishoten"
/ac "Ikishoten"
/ac "Ogi Namikiri"

just copy&paste this into your macros, and press the button 3times in combat, gg.. and please before you come at me with "but it's a Macro, I do not want this", fine but seriously try that macro first before judging^^
I assume we get a Single Target Ogi with lvl92, in 7.0 anyway because Ogi Namikiri is AoE

There is alot of disagreement among us Samurai, but in One Thing, we must be clear, they have to Bring Back Kaiten!