I personally don't feel that resembling humans totally disqualifies Elves from having pointy ears. My brother-in-law has said several times that my daughter has pointed ears (I hadn't noticed until he said something, but once he called my attention to it, he's right, my infant's ears are slightly pointed). It isn't completely unheard of for ears to have a slight peak at the top. I just always imagined that it would be more distinct in Elves. Even a very distinct point (a la Spock) I think wouldn't disqualify an Elf from looking Human at first glance, especially considering most people would have long hair and ears would not always be visible.