Sakura Power Up
I think that her power up will be related to Buddah.
Because her Yin Seal is related to Buddah, as well as her name and what she represents,
In mostly every pictures, Buddah seems to be associated with Sakuras (cherry blossoms)
The Japanese cherry blossom is interpreted as 'transient of life...simular to Buddah.The cherry blossom tree meaning holds many spiritual beliefs. These beliefs are set in deep within the fundamental teachings of Buddha.
Her "Lineage" seems to be connected to him as well, Tsunade's yin seal, Mito "probably" Yin seal, and Hashirama's mokuton jutsu's.
Sakura also have perfect chakra control and is easily about to balance her spiritual and physical enegry which I think is required for enlightenment, so maybe that going to be her power up... It would be unique too
and dont give me she already showed her power up, it's over (because honestly she show nothing new)
She has his mark so it's pretty obvious.
This is how i think it will go Lol
Also it should be mentioned that this could be a slug sage mode, because one of Buddha's abilities was to divide and the slugs divide too
This would make her on NaruSasu level