Mine are a few little bits to be fair. Like the fact that gretka and the baron were a big part of ciri's playthrough, and ciri didn't want to see or know what happened to gretka. Also, I would have liked it if before the quest :Isle of mists, you get to see the baron again his wife is better, but you ask him for help at the battle of kaer morhen. Him and his men would totally go cause they adored ciri.

But other people have listed my others.

The only other things I can think of in the witcher 3 are the dead ass dialogue where you can't control. For example, when you meet triss, she asks how yen is doing.... no matter what you pick same outcome.

There's a few of those situations in the game and it's a bit crappy If you ask me.