I would fully support added races and classes. I am a huge fan of Aasimar, Tabaxi & Kenku. Not really sure if we will see those last two in the game ever though (maybe via mods?). They need to apply lots of fur and feathers and I don*t know how difficult and complicated it can be for a developer to put those together. For Kenku it can also become quite complicated given their feats (how to integrate mimicry in a fun way into a video game. Maybe they have to homebrew those feats a little.)
Classes vise I am open for anything. Even as part of DLCs or Expansions.