OK, I love computer RPGs, but I have no strong connection to DnD or PnP in general.
BG2 was my first DnD game, I never heared of DnD or PnP before, I got it because other people said it is a good computer game.
I read the manual and learned that mages throw fireballs, clerics heal and have a god, rogues sneak and fighters swing weapons, so far so good.
I had to learn some basic concepts like thaco, AC and saving throws. The rest was just reading the descriptions and trial and error.
The story was that the bad guy kidnapped my girlfried to become a god and I have to kick his ass.
This was sufficient for me to play and understand the game.
Now I read about BG3 and I think " Hey, I killed this guy 100 years ago and that god was already dead and long forgotten back then. And now I meet them on the street."
I definitely do not want to live in the DnD world. There is a world changing desaster every decade were continents and whole planes shift, dead come back to life while others disappear and gods kill each other all the time only to come back after the next desaster.
For me "100 years later" simply means that the the world looks different ( maybe except some monumental buildings ) and I meet new characters ( except a few who live very long and who have NOT been killed in the previous game ), but the "laws of nature" remain the same.
So what do I need to know about BG3?
I have been kidnapped by illithids, first I have to get this toadpole out of my head and then I have to ass kick the ones who are behind this plot.
The rest is game mechanics I just have to learn.
If the main story is interesting enough to get me going forward and the game makes me care about my main char, my companion, other NPC and my decisions, I am happy. So far it looks very good.

Prof. Dr. Dr. Mad S. Tist

World leading expert of artificial stupidity.
Because there are too many people who work on artificial intelligence already