Yaarel
🇮🇱 🇺🇦 He-Mage
No, I don't think half eladrin would even exist story wise. If the High Elves, the most arrogant race in the prime material plane think their arrogant, what makes you think humans even have a chance with them. Second, half elves should never have trance. Trance should strictly be an elf ability. Simply because trance ties into the whole life death and rebirth of elven souls. Half elves don't have elven souls. They have human souls which is why they need to sleep. I don't like the side bar of the half-soul theory, because if that was the case, every half elf born, means another elf soul is doomed to never see Arvandor again. But of course it's your game, do what you want.
It depends on setting.
I see the fey elves as fun-loving hedonistic artists of magic. Any flavor of arrogance gets in the way of that sense of an innocent romantic seducer.
Heh, the hedonism definitely includes the possibility of a half eladrin.