I agree.
I thought Elrond was perfectly cast. I loved him.
To paraphrase Gandalf: isn't everyone listening? The powerful cannot wield the ring, its only master is Sauron. The only chance is to give it to one of the little folk, who have little power, or aspiration for power. They do have, however, hidden strength and bravery.
Elf friend,
Sam
Sellout....
My problem with Elrond as cast and played in the movie is purely my own subjective way of seeing him in my mind's eye as I read the book versus the way he was portrayed in the movie. He seemed arrogant and a bit angry all the time in the movie, whereas in the book I pictured him as serene and humble, yet supremely confident. These qualities did not come out in the movie. That's all I'm talking about, not what he actually did and decided regarding the Ring, which was very true to the book.
I'm just saying that, for me, he was the most weakly cast of a very fine (and finely cast) movie. So where everyone else gets grades in the A+ to A- range, I would rate Elrond as about a B to a B-.
Hope that clarifies...