Re: who in M.E. could actually wield the One Ring?
Aragorn wrested control of the Palantir because he was its rightful owner. It was created for benign purposes. The One ring was not. Anyone but Sauron would wield it to do good, but would just replace him in a cycle of tyranny.
[size=1]Fey he seemed, or the battle-fury of his fathers ran like new fire in his veins,... even as Orome the Great in the battle of the Valar when the world was young. And then all the host of Rohan burst into song, and they sang as they slew, for the joy of battle was on them...[/size]