You had to kill the Gmail Compose page?
I value single-tasking.
There is nothing more distracting than an open email inbox.
Sometimes I have a thought I need to communicate. Sometimes it takes me a while. Sometimes it takes concentration.
That is why I had your Gmail Compose page bookmarked. I could go straight to a platform to communicate my thought without running into the biggest distraction available.
Will someone please, please, please make a reasonable Gmail facsimile that I can pay for, so that I don't have to put up with these arbitrary changes? First the "new look"... now the dead compose page... what next? Why does Gmail keep fixing things that are not broken?
If you want a bookmarkable full-screen compose page, that is still available. Go to http://mail.google.com/?ui=html , then click compose, and bookmark that page.