Sarada needs the Rinnegan if she wants to scale up to the stronger enemies in Boruto. She could obtain this power.

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

Sasuke Uchiha managed to awaken the Rinnegan in the Fourth Great Ninja ... Sasuke had already awakened the Eternal Mangekyo Sharingan. However, this wasn't enough to take him down.

Beginning with Sasuke Uchiha and his ever-evolving Sharingan ... a wide number of dÅ jutsu techniques, the Byakugan, Rinnegan, and Sharingan are collectively termed the Three Great DÅ jutsu.