Sasuke could finally regain his Rinnegan in Boruto. This power up could allow him to compete with other characters.

Both of them lost their major powers at the same time. Sasuke lost his Rinnegan without actually getting to do anything ...

This is why the likes of Sasuke had to develop a Rinnegan, and precisely why Kakashi could only rival Kaguya after receiving Six Paths chakra from Obito when he died. How much can you see with ...