Jason

So you want to make a spin off about a serial loser who has 0 capacity to do the digging deep to get to the finish line and just stands around pretending he isn't just aura farming and whining about i could if I wanted to, when has vegeta ever been useful for anything other than bullying small fry or killing the real badguys minions because he is the anti-hero who is needed to do the dirtywork

A new spinoff will be hard especially if it is pre timeskip I can already hear the Puritans whining about how ever minute detail is a blasphemy to shippuuden and its lame and bad writing

Let's hope he doesn't get too much of an upgrade, the last thing I want to see is boruto getting all this hype then end up pulling a gohan and being a dud after the cell games.

Hard to say obito was an uchiha with an incomplete 10 tails sealed in him. Hima has energy from all 9 beasts (small amount from some), the energy naruto and hinata got from haguromo and hamura, has DNA from uzumaki and hyuga, at first glance she isn't that strong but she has a lot of potential. On top of that, its hard to say just how powerful jubito was if you think about it. The hashirama cells aside the junchuriki power should be capped by the hosts chakra and uchiha aren't exactly huge chakra batteries compared to uzumaki.