The biggest issue I have with the Human model is the fact that males are far too bulky. They look like wrestlers with aged and blocky faces. Slapping glowy blue eyes and pointy ears on them won't make them less unappealing. I would much rather Half-Elves get a new model that combines elements of both Humans and Thalassians. The whole point of a Half-Elf is to have some similarity to both parent races. That means there has to be some resemblance to Thalassian Elves as well as Humans.
Basically, I find Human males aesthetically unappealing but I find Thalassian elf males aesthetically appealing. If only one race is to be used as a base to make Half-Elves I'd prefer it be the Thalassian model. But since we already have two variants in the playable Blood Elves and Void Elves, I feel that a new Half-Elf model that doesn't use either the Human or Thalassian model as a base, but rather is a unique amalgamation of both, would result in a far more aesthetically appealing model.