Now with my Point of View of how the Samurai of FFXIV should work, what would my Dawntrail Samurai look like?

First off Kaiten would've returned at lvl52 and would've gotten the Tendo Buff on lvl100 instead of Meikyo Shisui.

Cone Tenka Goken would've returned.

Mumyo Shoha would've returned and the First Shoha would've gotten an Ranged Attack Perk, because even though I hate Line AoE Shoha, I love the Animation turning Shoha into a Ranged Attack is the Best of Both Worlds because that way we can keep the cool animation while being true to Shoha's Original Design. +Come on! charging up targetted Shockwave directly to display Sword Mastery is just amazing! Compared to Geirskogul on Samurai.

Ikishoten would've turned Shinten into Sen'ei and Kyuten into Guren

Ogi Namikiri would've shared it's Cool Down with a Single Target Alternative, mastering the Ogi Technique.

about Zanshin.. honestly idk, I would categorize Zanshin as Discovery Skill, means 8.0 would add an Single Target Variant and we're good. Though! I would remove the Kenki Cost of Zanshin since Zanshin already requires Zanshin Ready to work, so it eating up Ikishoten's Kenki boost is redundant.