Vael
Legend
The only thing I don't like about teh Ancestries is the mixing part tbh. I've never been a big fan of the genetic mixing that seems assumed in many settings, without doing something more like "halflings / humans / dwarves are just all branches off the same root" a la Canids.
OTOH, I do like the suggestion that what you might actually be doing is making an entirely new species/ancestry - not actually a half-Galapa/Drakona, but a Dragon Turtle - something new.
This is what I've been doing to quickly add some DnD/MTG ancestries to the game:
Aven / Aaracokra: Elf (Quick Reactions) + Faerie (Wings)
Naga (started by looking at Amonkhet): Drakona (Scales) + Orc (Tusks - renamed to Fangs)
Lizardfolk: Drakona (Scales) + Firbolg (Unshakeable)
Harengon: Halfling (Luckybringer) + Faun (Kick)
Obviously, these aren't exact and there's probably better combinations and such, but I like this as a way to quickly expand the game.