It's incredible! This game is perfect just the way it is and definitely fills a void in the RPG genre. A few things that could be slightly adjusted from my own experience is the lack of variety of weapons and armor. Perhaps an add-on in the future could be strictly just a massive expansion to weapons?. The game is otherwise incredibly beautiful and smooth. It's also extremely immersive with dialogue and quest diversity.
One thing we as the gaming community need to credit Obsidian for is how well this game launched without being plagued with bugs or glitches. Obsidian has really crafted a masterpiece in a short period of time and they deserve a lot more credit.