I don't feel like crafting would add much to the BG3, since it'd mostly be mundane weapons you could otherwise just buy for most of the game. However, I'd love to see them expand crafting if we ever explore Chult or Maztica (I loved the NWN2 expansion that went to Chult, but the engine was definitely not equipped for that kind of survival open world. I feel like BG3's engine would be able to handle it much better with a bit of expanded options).