Nasu is a mixed bag of a writer. He can make excellent characters, a varied and interesting world, and a pretty good story. However the constant 30 minute exposition dumps and cheesy ass Servants explaining their powers mid battle hurts it a lot. The first half of Fate route is some of the worst pacing I've ever seen, and yet I somehow ended up liking it more than UBW. If you can get past its flaws, it's an excellent story with compelling characters. Sakura and Shirou were my faves.