Likewise, flattered to be in your short-list, LukasPrism. The suggestion of community-related easter-eggs is funny. I could picture Ilyn Thot's medical journal mentioning "Drath came to consult for a sore throat. Sage and lemon infusions worked wonders". Or references to old forum memes. I could see the goblins telling Volo "we demand more sexy tales of our heroics". Or Lae'zel, fearing transformation, saying "oh no, I am become a monster".
That being said, I think it's clear that Larian does read the forums and other social media. Why they remain mostly silent and why their communications avoid giving any indication of what they're aiming for, that's a bit of mystery to me, and it sounds counter-productive (but I'm no expert). I have a number of hypotheses, but whatever. It seems clear that Larian doesn't plan to change that.
Would I personally find some creative, secret winks and nods to us concretely
useful ? Not really. Could it be fun ? Sure ! Harmless fun.