Parrot is an integrated site builder and editor concept for WordPress, and Davide Casali talks about it here. This concept started as the team thought of new approaches to how a future WordPress customization experience could have worked.
I like the concept and you can understand how if you start off with “What if we didn’t have the constraints we have today in WordPress to build a site?” then you get some interesting results. Quote:
The web is often trying to reinvent the wheel, but that wheel has already decades of design work before WordPress was even committed to a repository. Namely: desktop applications.
Again, it’s just a concept at this point but I would happily encourage some designers and developers to give this some attention -if no other reason then to see possibilities with WordPress “rules”.