The problem with the underdark in BG3 as i see it is that theres no sense of real danger , everything is nicely lit and the monsters are ridicilous underleveled, taking on minotaus and boletts as lv 4 is so far away ffrom D&D lore you can get, venturing into the underdark should make you shit your pants tbh, right now its like a visit to Disneyland where all the monsters on display is just for fun and giggles.