I may or may not be an Obsidian fanboy now, but yeah, they need better quality assurance.
The problem is that they, like Troika, are more focused on an ENORMOUS scope and overreach. They have the best dialog, and the greatest story concepts (and even when it is something slightly generic, like NWN2, they excel in other things, the dialog and interactions are quite fun. Then again, the problem with NWN2 was stability and TOO MUCH CONTENT).
On the other hand, they are less so than Troika was. What other company has needed fanpatches with more developement time than the games themselves to be considered PLAYABLE?
Troika only released 3 games, all of them considered the best at... something. All 3 of them still have developement in the fanpatch area:
Temple of Elemental Evil, restored content, making the area less bleh. Best d&d implementation, or so they say. Patch: Circle of Eight fanpatch.
Arcanum, restored content, gameplay tweaks, restoration of missing animations, balancing, proof-reading, reimplementing quests, enhancing quality of sound AND graphics (no, really), discontinued now though. Patch: Drog Black Tooth's Arcanum Unofficial Patch.
Vampire: blahblahblah: Bloodlines. MOST immersive RPG so far, in my opinion. Rushed. BUT goddamn if it ain't worth it. Too bad that at launch it had some horrible glitches that made you unable to advance in some areas. Hell, even with the fanpatch it can still happen.
Even if it is awesome as hell, there are areas that are bad, I hate the goddamn nosferatu warren sewers. HATE. On the other hand it may be done to troll the player since then you get a silly little shortcut in an area you already visited a couple of times, bah.
I don't know where I am going with this, but eh. Likely that while they do need more QA time/better QA, their games are not nearly as broken as Troika's, and if they are broken it is because they are overreaching and actually trying "different" things.
On the other hand,things like Divinity 2 and The Witcher get retooled with most things fixed, so I dunno.