What if Yhwach promoted Soldat to replace the dead Sternritter for the 2nd invasion

Now I know, I know. One of the biggest complaints about the arc is that there are too many villains, where many never get to actually do anything.

But hear me out, a lot of our liutenants also never get to do anything notewordy. And i feel like that could be easily fixed, by giving us 5 newly appointed Sternritter, who are far weaker than the rest.

That way people like Hisagi, Ikkaku, Yumichika, Matsumoto, Isane, Omaeda & Hinamori might actually get to do something besides getting treated like jobbers.

(I would add Izuru & Iba, but Izuru's story would be difficult to alter, and no way would Kubo ever allow Iba do anything on-screen)