I finished the game, and my opinion of it has improved marginally.. There's no doubt that the stories were as good as ever, and the Magatama helped somewhat break the investigation routine of Move-Talk-Present-Talk-Move but I just didn't enjoy the game as much, especially the first part. I don't think it's because I'm getting bored of the formula, but since the Edgeworth case I haven't really been having fun with the franchise.
Though some of the humour in the last case especially was great - like Gumshoe telling Pearl to stay away from whips.. I have to disagree with Bill, though - I didn't find the last case stressful, as he put it, at all.. You could see the ending come from a mile away, and since you already knew the truth all you needed to do was buy some time. Usually you uncover secrets during the trial, but this one was quite dull.
Also, the Edgeworth storyline was very disjointed. Even if you disregard "Rise from the Ashes" since it was never part of the original series, his whole reasoning for leaving for a year was messed up. They made it seem like after he was acquitted and von Karma was caught, he had made peace with himself, and he even wanted to trade spots with Phoenix to become a defense attorney. There wasn't even a hint that he was so troubled that he would take a year off to find himself and his purpose.
Maya's drawing on the card at the end was touching, though