Piff, I can indeed tell you like the planetouched races! I too like planar races, but rarely had the opportunity to play many of them. Thanks for the detailed explanation because I thought I was going nuts not seeing hellish rebuke when the book clearly said it was at 3rd level.
Fey'ri (the Elven variant of Tieflings) is what I always wanted to play, but never got the chance. It would be nice to get to play one eventually (not necessarily in BG3, but perhaps one day I will grace a tabletop game again) to play that race.
I mean all the better if they do get added, but I won't hold my breath.
The main Planetouched I would like to see are the Genasi, Aasimar, and Githzerai (just to see how Lae'zal would react to having to fight along side her other racial enemy to get off that ship). I mean I'm pretty sure that is literally the only thing they both can agree upon is killing Mind Flayers. Outside of that they just fight each other on sight. I just think it would be interesting to see is all.