I really like the gestures in this game, gotta say. It's a nice touch that they just never change, even into Investigations and Dual Destinies. It even got parodied in Haruhi which got a good chuckle out of me.
Nothing is more frustrating than getting stuck in an investigation phase. I usually like them, at least as long as it's not the third case of the game (for some reason the padding is horrendous in all of those), and the Psyche Locks did well to provide you with short-term goals to work towards, but sometimes you just forget to present a certain profile or piece of evidence to someone, or forget to examine a particular thing in the room, and spend freaking forever trying to figure out how to progress. My favorite part is when Edgy gives you a report about a past case and you literally need to present that very report right back at him so he gives you the 'second part' of it. smurf you too Edgy.
Wait what? That's not how I remember it...But you know who gets a bad rap? Manfred von Karma. He didn't mean to kill Edgeworth's dad.