The Witcher 3 disgusted me. I'm gonna be eternally hated for this, but here's where to say it.
The storyline was just terrible. Like, they "rush" you to find Ciri because she might be in danger, but instead of extorting information out of people, you instead go run errands. Also, while "in a hurry", you stop at every inn to play cards, you go find useless treasure around the world, help people for no reason at all, and finally, after 100 hours of content gating, it's really not that spectacular.
The combat was "decent", but it was basically a choreography of side-steps and wait until there's an opening to attack. Even at the hardest difficulty, I had no use for potions or oils (although oils helped reduce the punch-bag every enemy was).
Yes, it has many good things. The dialogue was great, and the voice acting as well. Mechanics are definitely an improvement, and the graphics are usually stunning. Grim Geralt is kinda back, and it's cool to play a badass, as usual. It's just so... uninspired. I was probably spoiled by the first two games, but I felt this was very much like what Inquisiton did to the Dragon Age series.
Also: way too many candles placed in the worst possible places! Haha!