How long has this project been tinkered with? If you include the first pitch, it's like a decade. Triple-A dev cycles that used to be a cause of mockery or Duke Nukem Forever jokes have become the norm as is. No wonder that everybody is jumping on those games the minute a decent one is released. People have got to justify buying those 2,000 bucks GPUs and Next Big PlayStations somehow. And still they won't change a thing: By the time TES VI et all roll out, kids made when their predecessors were released are gonna have their driver's license.
Unless Larian go fully-on Bioware now, I'm more interested in what they're up to next. And I wasn't much of a fan of DOS. However, given how much that evolved from being a comparably combat system demo and thinly veiled linear encounter parcours into a more fleshed out RPG experience, there's plenty room to grow here too still. Even if BG3 would be my favourite game ever (it's not), I'd be the same.
The most potential is still in the systemic design... With spells in particular outside of combat in RPGs being mostly woefully unexplored. That is, aside of casting "Let there be light!" in a cave. There's some that don't even let you cast spells unless you're engaged in combat. As if there were two seperate games at play: "Engaged in combat" vs. "Not engaged in combat."