Board Thread:Naruto Discussions/@comment-46080847-20200619100348/@comment-46080847-20200619120045

Frwt wrote: Sakumo should've totally have been reanimated, lol never crossed my mind, would've been so cool if he was

Fugaku is another good choice that I would've liked to see, tho were you found he was on par with Minato? As far as I know all we know is that he was the head of the Uchiha clan

Kushina has never been relevant battle-wise, Kishi just doesn't care, plus she had already an encounter with Naruto, tho the sealing is a wery good reason to not bring her back "As an Uchiha, Fugaku had very strong chakra. Even more, he was considered to be a rare genius,[10] whose nickname of Wicked Eye Fugaku made shinobi of other nations tremble. His talents were considered comparable to Minato Namikaze and the Sannin, even viewed as a prime candidate to become Fourth Hokage.[3] His abilities were so advanced that even his elder son Itachi, a prominent member of their clan at the time, hoped to avoid fighting such an opponent.[5]" - His wiki page, Abilities section

As for Kushina, I mean, Dan had never been relevant battle wise, he was just someone that was emotional fodder for Tsunade's backstory. A lot of the Edo's weren't even heard of, much less battle-relevant. And Naruto had an emotional thing with Minato, yet Kishi was willing to bring him back in.