While BG3 was a better game, the combat in Divinity was more fun. Not only was cheese encouraged, it was almost required at higher difficulty levels. Summoning a lava worm to shoot a laser beam at some tossed out fire traps to cause a million damage? Sure, why not?

Given how much more likely one is to have played 5e than any other system, it's probably not all that controversial.

5e is a great system for a “Rule of Cool” style of DMing. That’s amazing for a decent DM and inexperienced/less technical players.

It's not even that good at that. Fate, for example, is a much lighter and better system for that. Aspects are a very simple system for setting expectations and letting players do wacky things based on them.

If I was going to run a game for new players I would absolutely not reach for 5e. It provides too much fertilizer for "can I move that far?" and "if he's flying 30' up can I still shoot him?" minutia.

I probably had fewer "can I...?" questions in BG3 than any other CRPG, if for no other reason than that all of the enemy attributes are exposed at all times, and your spells tell you which attributes they interact with. It's that same quality that allows the technical design of Larian's engine to shine, and it made large swaths of the genre feel dated immediately. Either in the video game or the tabletop, my combats don't have many questions to bog them down.

I disagree. It's a poorly designed system that fails at accomplishing anything better than alternatives. The thing it has going for it is the name/marketing. There are lighter systems that are easier and cooler, there are heavier systems that are more tactical, and there are equivalent systems that are less jank. The fact that there's things like the bonus action, that was added so late in development it was never playtested, in 5e makes it pretty awful to play. There are so many exceptions you have to learn to even start too. It's not a good system for noobs and it's not a good system for experienced players.

I played Original Sin 2 after BG3, and at first it leaves a huge positive impression, but then more and more problems present themselves as time goes on. The armor systems create stunlocking issues; the XP system encourages genocide; the skill system feels freeing at first but ends up landing on dominant strategies very quickly. It's still a good game, and they've said in an AMA that some of my biggest criticisms won't be in this new Divinity, but their track record thus far is that their own RPG systems are not as good as 5e.

Divinity might also be closer than you think. If they go early access, which they haven't committed to, we might be playing it next year.