If you're a Google+ user (and if not, hit the forums and get you an invite!) and have ideas how Google can improve Android's core apps like the calendar, contacts, email, etc., Attila Bodis, Android applications engineering manager, wants to hear from you. He's set up a threaded post at Google+ asking for feedback and ideas, and even Andy Rubin has chimed in to participate. Like Atilla says, he won't be able to reply personally to every message, but they're reading them, and some great ones should come out of this. Be sure to head over and share your thoughts at the source link below!
Source: +Atilla Bodis