I love how almost every encounter in the game has several ways of approaching them and they can also have different outcomes depending on approach and how the actual encounter turned out.
Other than that, I'm loving the combat system so far, character building, exploration, the feel of having an impact on the world, the graphical style and soundtrack, like you (OP) said everything feels like it actually hits (unlike some games where everything feels like air), etc.
And the best part is that this is just the beginning, even act 1 will go through significant changes and having double the amount of classes and specializations later will also make it an entirely different experience and then there will be another 60+% of content added after it.
There are indeed quite a few game breaking issues, but Larian has already fixed quite a few of them in 3 hotfixes and it's only the earliest phase of beta, so considering that I think it's looking like there's a very bright future ahead of us.
