Honestly, I wish they would find a way go expand on the Meditation stacks. 3 stacks seemed fine with how we build it, but with the addition of Ogi Namikiri being another skill that grants a stack, I think a minimum of 5 would work perfectly. There could be an evolving button based on number of meditation like how iaijutsu changes based on number of Sen.

Maybe meditation could also serve a purpose with regards to kenki through some of the skills. Either affecting Shinten and Kyuten in some way or being something gained by way of Senei and Guren, I don't know. Throwing out more ideas since the whole Meditate/Shoha line of skills has always felt a little tacked on. It certainly became better after initial changes, but I do think it could be expanded and thus open a new method of using skills.