Corinnguard
Hero
Another element from Pathfinder 2e to incorporate into 5e, perhaps?You pick an Ancestry and then every one of those gets a heritage. The heritage is the "half-elf" part of the equation. Periodically you get feats for your Ancestry, so a half-elf can pick either elf or human feats. It works well, but that's not how D&D is designed. I think the "take a feature" part is just clunky and I'd be really surprised if it survives.
