Then Sarada would carry Indra's chakra and Boruto would have Ashura.
Well not 100% of Indra's chakra but a diluted version of it (or diluted version of Sage chakra), it would explain her bad eyesight because only MS chakra deteriorates a Sharingan user's vision.
In Boruto's case he most likely doesn't have Ashura's chakra because Hagoromo's younger son never had the strong chakra genes that Uchiha inherited from Indra, and Kishi kind of implied Himawari was the one that inherited Naruto's Yang.
But having said that, I think he will definitely have very large amounts of chakra and stamina since his faher has Hagoromo's body.
In addition, he's been shown to have inherited powers from both his parents, he has Naruto's chakra control and Hyuga chakra control, as well as being naturally talented with elements like all of Ashura's descendants, the genes he has should allow him to use Hyuga powers beyond the clan's capabilities.