Now that you mention it, I feel like a lot of their games feel incomplete or unfinished. Like they were lacking time, money, or both
They have improved a lot about it.
Tyranny feels definitely like this (first Act is absolutely great, but it goes downhill from here, somewhat failing to cash on its premises to become a much more generic game), even though it's an interesting game that is worth checking.
Outer Worlds has a bit of it in the last part, which clearly feels rushed, but the rest is good.
PoE 1 & 2 don't give this vibe at all though. They feels complete.
As for the past discussion, my opinion :
PoE 1 is pretty close to
BG1 in theme - lots of exploration, scratch the "old-school PnP feel" but slightly bland sometimes. Still well worth the time, and the cast is rather good.
PoE 2 is "
PoE1 refined". Save for the mechanical change on armour which I despise and the dumbing down of Eder (which was by far my favourite character in PoE1), it's better on every aspect and one of the best RPG of the year.
DOS1 is good, but it has a somewhat weird goofy humour mixed with an incredibly dark setting, which can be a bit jarring/immersion-breaking and the companions are pretty lacking, but it has a pretty original design where you can roleplay both main characters at the same time (even when they are arguing).
DOS2 is to
DOS1 kinda what
PoE2 is to
PoE1 : the same, but refined, much better on the whole save for the armour mechanical changes which are stupid (though this point is much more acute in
DOS2, where the armour system severely damage the fun of the whole combat and is a major flaw of the entire game). Writing is noticeably improved from 1, with the goofiness being toned down (the setting stays just as dark, so it can be pretty depressing actually).
Also, both DOS1 and DOS2 have a completely idiotic stat inflation which is both immersion-breaking and completely devalue your gear every one or two levels. I don't even imagine playing DOS2 without a mod that fix this problem.
And if we're talking "old-school modern RPG", there is also the
Pathfinder games. They are the "epic D&D campaign" style, probably the closest to a spiritual sequel
BG2 could have.
Pathfinder : Kingmaker is great. Writing is adequate, the rules are basically ADD3.75. They are quite imbalanced though, so the gap between "I don't know what I'm doing" and "I know everything about and know how to apply them" is really huge.
I just finished
Pathfinder : Wrath of the Righteous : it's really similar to the first one in quality, both in strength and weaknesses.
Both can be played completely independently (there a few references to the first in the second, but it's on the "easter egg" side, really insignificant), both have stories that are straightforward but as it goes on, are actually more intricate than they appear.
In the end, it's more about if you prefer a "building your kingdom" or "war against demons" theme. I prefer the former, but that's just personal.
Notice that both DOS are turn-based only, PoE1 and Tyranny are RTwP only, and PoE2 and Pathfinder allow you to chose.
Also, both Pathfinder game are "epic" in scale, which means you shouldn't expect to finish them under 80-100 hours. Tyranny is shorter (maybe 40 hours ?), all other are about 50-70 hours.
I'd rank Kingmaker and PoE2 as the best, with DOS2 pretty close.
PoE1 after that. Then DOS1 and Tyranny.
All of them are good games that you should play if you like western RPG.
I'd also add a surprising outsider :
Spellforce 3. If you player the first two you might wonder at this inclusion, but this one has been made by a different team, and it's absolutely not in the same league anymore. It's actually surprisingly excellent writing and focus more on the "team-based RPG" like the others on the list (though the RTS aspect still exists, but is the weaker part). The fighting is fun, and while it's much simpler and easier than the other games, you said you wanted something less stressful so it might fit.