Well, there's a few other things on my AAO wishlist.
Other bits of AAI evidence
Cardboard badge from AA3, Case 3
English judge (Professor Layton vs. Ace Attorney, trial in the English courtroom in the prologue)
The Payne equivalent (Professor Layton vs Ace Attorney)
Duel Destinies era pocketwatch Phoenix Wright
Chief Prosecutor Miles Edgeworth (Duel Destinies era)