IMO, move tilde back, get rid of escape and delete (anyone enthusiast enough to get a Unix keyboard uses ctrl-h and ctrl-[, right)?
Now we have room to do a proper fancy return key, and fit all 4 macro buttons in the top right, so we can get page up and page down back (above the right arrow key).
Now we have room to do a proper fancy return key, and fit all 4 macro buttons in the top right, so we can get page up and page down back (above the right arrow key).