NIN changes and queries

[Seraphor]

Meisui
Is this viable utility? Is using and then cancelling Suiton for 40 Ninki going to be worth the loss of another viable Ninjutsu?

Kassatsu
Says it increases the potency of the next Ninjutsu. Does this just mean Goka Mekkyaku and Hyosho Ranryu? or does it bolster all possible Ninjutsu? If so, by how much?

Gotta say, Hakke Mujinsatsu is gong to be great for AoE, and Bhavacakra getting a 1s recast will be great too. Presumably though we'd just use Bunshin with trick in place of Bhava, and Bhava where we would usually use Hellfrog.

Trick phase:
I'm thinking... Bunshin, Suiton, Trick, Aeolian combo, while weaving all three oGCD's and finish with a Hyosho?
Or... could this be where we Suiton>Meisui for 80 Ninki (with Mug) to fit in a Bhava at the end of trick?
Would it be possible to fit in a Hyosho AND a Meisui>Bhava?
EDIT: I suppose the only way to fit in both would be with two Kassatsu charges, and then two Hyosho's would be more potency anyway, and fewer button presses.

Ten Chi Jin
With this no longer requiring Ninki, would this be more useful at some point in the Trick Phase?
Say squeezing out a Fuma and maybe a Raiton at the end of Trick, after Aeolian Edge, as this would be more potency than a double Spinning Edge or Gust Slash...