Suggesting features for Gmail

Google is going around collecting new features that is to be added to Gmail. Looks like the next mega update that is around the corner is going to be for Gmail. And I would love to see some of them. You can suggest features here. All you have to do is check the features you google to add and put your innovative idea in the end!
The new feature list includes some interesting features like:

• Rich text signatures
• Ability to block a user from sending mail to your account
• Hierarchy of Label system
• Additional chat emoticons
• Integration with other Google products
• Add notes to messages
• To-do list
• Multi-person chat
• Export messages to a CD for storage
• ...

Lets see what all features are going to come out. But i am disappointed because Google calendar has not yet got a face lift (I wish it had "To-do list" and much more). The major feature I am looking forward to see in Gmail is integration with other Google products like Calendar,Picasa and Google Talk. Another Integration option Google missed out to mention in their list is to integrate google docs and spread sheets. I also wish we could have a better navigation method to other google services which is presently on top left corner!

Suggest you features for Gmail