Ereh_Kun
I would add there are a few more missing (acknowledging the ones already called out like Shion, Mikoto or Pakura). Granted these all depend on who survived and who is brought back somehow (like Nii Yugito), and not all need to join, still just suggestions. Inuzaka Hana Inuzaka Tsume (she really needs the love) Guren of the Crystal Release Kazahana Koyuki Mabui Sara (Queen of Roran) Shiho (cryptanalyst, she needs some love. Created and tossed away) Uzuki Yugao (last of the ice queens) Toki (Land of birds). For the ones with political power/troubles, Naruto is a nuclear deterrent. Most people won’t want to mess with a country (big or small) if a hero of the world is a FTG away.