This sends feedback to the developer of this site only. You are welcome to send feedback about this site. Comments about the Google Sites project should be sent to Google or posted to the help forum. Please do NOT complain to me about things I have no control over, like the "Made by Google" footer.
To send feedback to the Google Sites developers click the 3-dot icon next to the publish button while in edit mode and select "Send Feedback". You can request features that you feel are important. You will not hear back from Google but they will keep track of the requests.