Finished the game last night. I stand by my first impression rating of 7/10. The main story was fine, albeit a bit dull. The twists were predictable, but it wasn't bad enough to distract from the whole experience. I wish the game focused more on Hogwarts itself, as the countryside was pretty dull all around for the most part; I barely explored the south-eastern most part of the map because when the story finally took me there I was starting to get a bit bored of the side content. I will say, the alohomora "puzzle" is terrible and got tedious real quick. In fact, most of the puzzles in the game were pretty bad. The only ones I enjoyed were the depulso puzzles in the 2 optional rooms as they took a least a little thought.
Overall, I put about 40 hours into the game and probably won't go back, though I am looking forward to see what the devs make next.