Right, as I have stated it indirectly increases both.
Larger chakra supplied shunshin = faster movement.
Larger chakra supplied CES = stronger attacks (or will you just completely ignore chapter 632?).
Of course it doesn't alter base stats, but a greater flow of chakra makes almost everything more efficient. Don't know why durability came into play here, never argued it.
no, no there is no increase at all
shunshin is a generic universal tool in the narutoverse. unless you provide a statement of tsunades boosting her shunsin by releasing a seal, you're justy making stuff up. its a medical jutsu that heals automatically, nothing more
nothing is altered unless it is specifically stated to
you can keep your ''of course''; it is baseless
edit: sakuras punch in 632 was not aided by byakugou in terms of anything canonical. she supposedly can do the same in base.
if she isn't worried about chakra usage, its a display of efficient chakra control, not the other way around( its not like a rasengan, the medics are using less chakra, compressing it, releasing it at the right time & timing it w/ a physical strike--theoretically much less chakra usage). the significance of her
activating it before punching the ground are several:
- the reveal, it made it more dramatic
- fanservice in general
- paralell w/ tsunade ''this seal allows me(a medic) to join the battle''
- the script, tsunade never used a punch quite that big because such is out of place - hence kishimoto scripting a bunch of cannon fodder to be swept up in sakuras exorbitant version.