Miles Edgeworth is the best character in the series, so it's about time they made a game starring him.
Another new element is the Logic section, where you can put together the connection between two different facts to reach new conclusions. Sometimes the connections are head-slappingly obvious, but others require some clever deductions.
Speaking of deductions, this game's stories follow a more sensical path than previous games. This results in the game being a little easier than the others, but it also removes most of the frustrating "how did they expect me to get that out of that?" moments. Even though the game is a bit easier, it's no less satisfying when you put together pieces of the puzzle.