The thought process doesn't change with two different buttons.
One to two targets, do Shoha 1; three plus, do Shoha 2 (as per the EW TTs). Shares a resource and will probably share CD.
One to two targets, do Shinten; three plus, do Kyuten (the potency difference is so small you'd probably just Kyuten at 2+ though). Shares a resource.
One target, do Senei; two plus, do Guren. Shares a resource and a CD.
You are merely counting how many mobs are up, and using either ST or AoE. At least with a fall off ability, you may want to think about which target gets your big hit, as opposed to the splash. Guren is the only ability that has that thought process, and it is unfortunate that it will never get used outside of trash pulls in dungeons...probably.
That's three buttons that could either not exist, or be used for something that's more interactive to the job as a whole.
AoE Yuki serves absolutely no purpose. It would be one thing if any combination of Setsu and Getsu/ Ka would allow for AoE Higa, but they do not. Now, instead of 1,2,1,3, Tekka, repeat, it will be 1,2,1,4, Tekka, 1,3,1,4, Tekka, repeat.
It's AoE. It boggles my mind why people care so much about involved AoE rotations for dungeon trash.
I hear you on the animations. A cleave ability can get cool animations too. And, let's be real. How well are you really seeing those animations when you're in the middle of a trash pack trying to dodge AoE?
Ikishoten going to two minutes is annoying as well. Tying the capstone to meditation stacks would have been better than tying it to our low CD kenki generation ability. Shoha could have turned into whatever the new ability is called at: let's call it two Shoha uses, or however many you can get in a 90 to 120s period. Kinda like Geirskogul for Dragoon. That would have reinforced better play than "push this button every two minutes three times." Why? Because if you messed up you may not get your super midare inside buff window.