I would love to see a new button in the designer that says "My Components". When clicked it can pull up your custom website elements that you can then insert into any of your new projects.
So if I were to open a new website project and create an awesome animated nav, I can then tag it as a component I would like to use for further use. Once I begin a new project I click on "My Components" in the designer and just simply drag my awesome nav that I created earlier and classified as a "my component" into this new website project.
What do you guys think?