You know what kind of baffles me? The idea of elves as stiff and formal and unemotional, obsessed with propriety and perfection.

A) what a boring way to spend several thousand years. But also b) I just absolutely love reading and writing depictions of elves as flamboyant, whimsical, artistic, and absolutely overemotional. Like, elves who will Luna-Lovegood bad jokes, laughing at "baboon's backside" until they fall out of a tree, and then their companions will laugh themselves silly at them. Elves who see an extra beautiful sunrise, and immediately burst into tears and spontaneously compose a poem about how beautiful it is. Elves with their epic ballads that mortals find bafflingly detailed and boring, but where not a single elf is dry-eyed during the performance, no matter HOW many times they've heard the same song before.

Also, re: the boredom of immortality-- instead of elves who are set in their ways and judgmental of people who don't conform to them, give me elves who immediately jump all over the chance to learn something new. Who have seen the artistic styles of ages and empires and different peoples, and who relish newness rather than eschewing it.

That's the kind of fun elf content I like to see.