It isn’t about “the Legolas model.” At least to me it isn’t. I’d just like to play as an elf that is so loyal to the Alliance they would forsake their own kin to fight and die on behalf of it. In a game and expansion about faction pride and identity, High Elves would be a perfect fit. Sure they’re are sparse, but so are other playable races and classes
High Elves do have legitimate problems depending on how they’d be implemented, but the request has a lot more merit than you may believe