Stéphane Thomas has written a post proposing a more unified design aesthetic for various Automattic properties. It's very thorough, including complete home page wireframes with content. Stéphane doesn't work for Automattic, and the post appears to be fairly random, so it makes this even more interesting and fun to me.
I really like the concepts in general, and especially the dropdown he proposes from the Automattic logo to list various Automattic products. Check it out and give Stéphane your feedback. h/t Daniel Bachhuber.