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

TBV chapter #18 is teasing a romantic spark between Konohamaru and an enemy, which could lead to unexpected feelings.

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

As for Boruto, Kashin Koji had asked him not to leave their hideout. However, evidence suggests that the manga could already be setting up its Pain ... Himawari Uzumaki as seen in the manga ...