I mispronounce just about all the names and words that Tolkien created. I even pronounce Tolkien incorrectly. I imagine Elrond has a beard. And I don't care.
*
Not always anyway...
I often wonder about the Green Dragon in our own RPGs. It has all kinds of creatures wandering in and out, but didn't Aragorn say that The Shire would be reserved for Hobbits only in the Fourth Age? Still, it would be dull if it was just for Hobbits.
*this is just to make it even more naughty...