Well Kagyua's Byakugan would be on completly another level... as she hasn't been shown in any panel with bulged veins around the Byakugan where standard byakugan eyes after activation show bulged veins but Kagyua seem to have just blank/white eyes.
Possible Baykugan's power up incomming ? Even if then it would be nowhere close to Rinnegan or Sharingan powers.
If I am right then Kagyua should have 8 trigrams 256 or 512 palms also she should be able to close even tailed beasts chakra points.
Kagyua's Kaiten should be on Final Sussano v4 or maybe PS level
Kagyua's Empty palm blow should be as powerfull as Shinra tensei, possible even evening elephant air cannons.
Besides Kagyua could have some more new moves.
If I am not right, then at least Kagyua should has all Byakugan attacks powered up(greater potency) and on bigger scale(AOE).