The two skills thing is really bad because wotc already has a handful of species that have that and more:
Ancestral Legacy. If you replace a race with this lineage, you can keep the following elements of that race: any skill proficiencies you gained from it and any climbing, flying, or swimming speed you gained from it.
If you don't keep any of those elements or you choose this lineage at character creation, you gain proficiency in two skills of your choice.
What races get this? Dhampir, hexblood and reborn. What else do they get?
Dhampir:
Darkvision
Climb speed, spider climb at will at 3rd
Doesn't breathe
1d4 bite attack with extra riders prof/day
Hexblood
Darkvision
Fey type
Eerie tokens (telepathic message or scry on holder)
Disguise self and hex spells 1/day
Reborn
Poison save advantage and resistance
Advantage on death saves
Don't eat, sleep or breathe. Immune to sleep effects.
Add 1d6 to any skill checks prof/day
Vs
Darkvision
Fey ancestry
+1 ASI
+1 language
Yeah, half-elf is absolutely the weakest option...