It’s gameplay and general…meatiness I suppose. In my opinion the story is just as good and the characters are better than Origins, there’s more depth to the companions and the love interests, but, it’s less epic, it’s a more self contained story and that means it feels a bit closed in and boxy at times. The environments aren’t as good as Origins either and are repeated so often it actually feels insulting after a while to have a character say “hey you need to go to this entirely new cave” and have it be the same EXACT cave as the last 10 caves you visited.
If you care more about story and characters you’ll still love it (heck, I still love it, it’s what got me in to the series) but if you really want to feel like you’re being swept up in a huge grand adventure it’s a little…lacking, compared to the other two. The structure is also weaker, it’s a lot of faffing about, rather than feeling like you’re actually doing important stuff and saving the world…
People have also complained that the combat has issues but as I play on casual and don’t care much about combat I can’t speak to if that’s true or not.
it’s still a good game though, and like I said the characters are fantastic. Still definitely worth playing. It’s just a little weak compared to the others. :p