How do you think its gave the humans and dragons and fighting chance if not used.
Obviously, having orbs that acted as virtual fountains of energy straight from the Elemental planes merely existing in our world was enough of an elemental influence to weaken the corruption they had to fight.
They where clearly meant to be used in fighting.
No, they clearly weren't. They were meant solely to balance out the elements. Not as weapons. And not "decorative pieces" either.
Point still stand can or not the Blade of Awe be empowered by one of the other orbs in the hero's possession? Will an evil us not use that you know after all?
Again, I ask, and have not gotten answered, how would the evil us have even learned of the Blade of Awe's existence in the first place? If they were evil, Valencia wouldn't have teamed up with them, thus they never would have met Trey, thus never learned that the Blade of Awe was even a thing, thus never would have been able to fuse it with one of the orbs that Sepulchure most likely already stole from them because they were too greedy to be smart and hide them away.
Are you telling me that those adventurers all 8 of them had each an attunment to each 8 elements to use the orbs?
First, there were 9 of them. Not 8.
Second, no, of course I'm not. Why would they need any sort of attunement to them, when their sole task was to protect them? Not use them, protect them. And what do their connection to the orbs even have to do with a hypothetical fight between a good us and an evil us that you seem incredibly dead set on high-balling the power of to practical god levels at a point in time where they wouldn't have even gotten close to such levels of power?