Now, with AI and a completely simulated dialogue and all that you might get more options - but there is a shitload of work put into what there is now and it really shows with each person having something unique to say - BG3 is well above and beyond other games in that manner. It isn't as fluid as with a DM there, but you just cannot get it without an intelligence designing it as you go - so for something like this you need a huge jump in AI that can speak its own words and design its own animations - and there is no indication that we are close, as a species, to making that possible in the near future.
