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

Techniques like the iconic Susanoo and Rinnegan ... his illusionary Genjutsu skills are shown to consistently catch Sukuna off guard in a video that stars a more cold-blooded Sasuke than fans ...

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

Pain (Nagato) uses the technique to control multiple bodies, Sasuke uses his Rinnegan to move through ... Sharingan can be used to cast a worldwide genjutsu spell and also appears to facilitate ...

An X user (@darentseta) redefined Sasuke's journey through the sequel series as Itachi's genjutsu, connecting it back to the fight between these brothers that happened in Naruto Shippuden.