Okay kyuu I think your cast is the last that needs power ups right now XD.
But I can already see you planning out your world domination quite nicely. Good to know you have a step by step notice for yourself XD
I'm not powering up the cast per se, besides you'll benefit from it since you control the Nara Clan.
I was reading and it came to mind that I could probably hook the Hyūga into the Pharmaceutical sector of business with the Aid of the Nara. The Shadow weaving jutsu has essentially no physical properties so it's the perfect tool for working with delicate things on the scale of cells and the like. With the Byakugan acting as a microscope I can replicate a version of microbiology and thus expand on the variety of shinobi supplements e.g. Mori's chakra ration pills.
Of course, Pharmaceuticals is practically one fat money making machines so that was my true goal. The Hyūga are already wealthy but I need something I can point at and say
'this produces a crap ton of money so I'm perfectly capable of splurging as I please' just as with Mei's trading company.
As an added bonus if we can diversify the variety of shinobi supplements we'll have the edge in logistics. I'm speaking about Konoha on that regards. We'll probably sell some inferior version to the other nations and keep the top-quality produces for ourselves. An influx of wealth and logistical superiority?
There's no way I wouldn't explore that once the idea was in my head xD