There's been a lot of discussion about Kaiten's removal and I was wanting to just express how detrimental it is to the kit upcoming so much that you could essentially delete Kenki as a resource and UI element and effectively have the same game feel on Samurai.
With Kaiten's removal, kenki offers nothing but a resource you dump on Shinten (there is the AOE and Hissatu abilities but they don't change anything).
With the most recent changes to Samurai (AND Ninja) kenki is losing a lot of it's already minor intricacy since the 1 minute windows no longer have a raid buff, ie trick attack, to benefit from.
So we're losing a 1 minute pooling window, while our 2 minute pooling window gets 50 free kenki often in the same GCD (if you double weave) which undermines the importance of pooling unlike other jobs, many of them who don't get half of their resources for free in that window or even generate anywhere as near as much of said resources on average due to RNG mechanics or flat out lower rates.
There's already so much working against the point of thinking about the importance of pooling kenki alone, nevermind Kaiten's removal rids us of the one thought process from kenki management:
Do I have enough for Kaiten if I use Shinten?
It's not a massive thought, but it alone justifies the existance of the kenki resource as something to be managed, otherwise they can just go and make Shinten into an OGCD CD with multiple charges just like Bloodletter / Rain of Death on Bard.
From there they can just remove the kenki bonus from Ikishoten (either it gives 1 charge of Shinten, or the ability is replaced entirely with Ogi Namikiri), and remove the cost of using either Hissatu ability (especially since it costs even less Kenki in Endwalker now and Ikishoten just gives it all the kenki it needs and more so why should it cost anything?).
Since Kenki as it exists going into this patch will be made so redundant, the UI element will be very close to being a burden that just clutters the UI up. Shoha isn't something we can even try pooling since you have to spend it before your next Iaijustu, and the mentioned issues with pooling being undermined going into 6.1 just makes it more redundant.