To be honest i rather don't Obsidian now is focussing more on action rpgs and pillars of eternity was plagued by many bad design decision just after the release that took some time to get corrected.

A) When the first pillars released Sawyer did not wanted immunity in creatures as result you could do silly stuff like blind Oozes or cause them to go prone. It was insanely hilarious and bad everyone complained about it but in the end it took months to Sawyer to admit it was absolutely trash.

B) The experience of pillars of eternity is taken by filling the bestiary and do quest. If you filled the bestiary there was not progression even if the creature encountered was a difficoult one to face no exp. That and quest experience only. This alone was problematic because in large scale it killed the exploration and the wonder.

C)The first pillars of eternity even if it had a good world building has no wonder no mistery. Everything was perfectly explained to you rather than allowing you to figure out things. The whole divinity thing was so bad that when i finished the game i felt like empty inside. It has no substance it want to be fantasy? It wants to be a science fiction? Is like a setting that felt very undecided on what it wanted to be.

No i don't think the modern obsidian would be capable to do this game. And in the market despite all the development problematic i see only Larian capable to pull off a BG3. The only reason of concern i have toward Larian is that maybe they are too much intimidated from implementing the core rules as they should be and this is a thing the D&D community that is very big is way looking forward.

This is why Solasta get mentioned a lot. It has loyal to the source material rules and it get appreciated for that. Despite being rather dull and generic and having a bad artstyle. I do believe if larian start to implement the core rules way better and is not intimidated by them they could create not only a worthy successor but even the best D&D around.