Despite some things in Act 3, I totally love this game. While I don't think it's as good as Kuro no Kiseki, It's still a great sequel, and I love the greater focus on characters. The Kuro Cast was already one of my favorites, but with this game, the characters grew even more on me. 
The gameplay was also fantastic, and I really liked the additions to the battle system.
Overall, I can say that while Kuro no Kiseki II isn't perfect, I still really love this game, and I think the good parts definitely outweigh the bad parts of the game. The Calvard Arc is certainly my favorite Kiseki/Trails Arc, and I'm eagerly excited to see how it continues.