Well at least there's a giant red COMPOSE button, because every time I see a giant red button, I think COMPOSE!
I'm hoping that they'll do another revision soon to make it look more like the recently updated G+ design, which actually puts some visual separation between content and navigation (and also doesn't have giant red buttons).
Fair enough that you don't, but putting your opinion forward as fact (like most of the people here and the OP) doesn't really advance the argument. Perhaps a lot of people have trouble finding the compose button on first use?
I'm hoping that they'll do another revision soon to make it look more like the recently updated G+ design, which actually puts some visual separation between content and navigation (and also doesn't have giant red buttons).