I wouldn't. The worst of Eldars in the Silmarrion is much lesser evil than even the best among the Dresdenverse Fae. For one, the former doesn't try to steal your children because you inadvertently made a deal with them.
But to be honest, as characters the Dresden Fae makes sense. And humans can and do become Fae, if only at the cost of your mortal soul. So not that much separation unlike the Firstborn and the Atani.
(Incidentally, I really like this fanfic about Harry Potter waking up in Dresdenverse and got hitched with Aurora, the Seelie Summer Lady; breaking the canon plot in the process. I don't think a similar relationship can really happen between a Tolkien Elf and a human (or other mortal) without something really special going on. Like Aragorn or, uh, his First Age ancestors.
But to be honest, as characters the Dresden Fae makes sense. And humans can and do become Fae, if only at the cost of your mortal soul. So not that much separation unlike the Firstborn and the Atani.
(Incidentally, I really like this fanfic about Harry Potter waking up in Dresdenverse and got hitched with Aurora, the Seelie Summer Lady; breaking the canon plot in the process. I don't think a similar relationship can really happen between a Tolkien Elf and a human (or other mortal) without something really special going on. Like Aragorn or, uh, his First Age ancestors.