I would love any Monster races that are native to Faerun being added but implementing them would be a challenge, maybe there could be sets like goblinoids, dragonoids, orcish, animalistic and such to make it get implemented easier?
Just implementing them wouldn't be too hard, as they already have models for a lot of our goblinoids, and the statblocks from Volo's. Implementing them WELL so that they actually feel like they belong in the story the campaign is trying to tell is another matter entirely.
I did just recently play a Feywild Hobgoblin Artificer in a 1-shot game and it was great fun, I love my grumpy red child. I would love it if Larian implemented more of the races in MToF, or Volo's, but I think we are about to get updates for everything, due to new books dropping.