Team 5 sensei included more than anything

Sasuke's Rinnegan

Edit: Also Boruto and Koji should find Jiraiya's body, and Orochimaru should use Edo Tensei to bring him back.

Would be nice to see Toneri getting unpetrified and interact with Boruto again

TBH Madara and maybe some dead Hokages...

Kaguya haha

Or Hagaromo

A serving member of the Kaguya clan and edo akatsuki cuz why not

I feel like there's not enough focus on the hidden cloud village i would like to see some of those guys and also be nice to see killer bee again i know he is presumably still alive but it be nice to confirm that

Nice to see karui since she's supposed to be chochcho's mom, udon , hanabi, ebisu, dodai,yurui, darui, kakashi, iwabee yiuno's team, orichimaru and peeps, baki maybe,temari (we saw kankuro), more otosuki, kiva, shino, mirai etc maybe?