Google Sites is taking user feedback via a survey right now. If you are logged into a Google Site you will see it in the tool bar next to edit page, create page, and more. I've seen it both on standard Google accounts and Google Apps for Business accounts.
Take your time and let the Google Docs, that is the Sites team as well, let them know your thoughts.
Thanks. It's always great to see Google Sites steered in a good direction from user input.