>For file size optimization and scannability purposes, consider omitting optional tags.

Is there much savings omitting body and head tags?

This seems like excessive optimization where having them there sometimes because someone left them in, but omitted the next because someone else removed them seems like it could be confusing, a few brain cycles might be more valuable than the possible savings.

Granted I'm not Google so maybe there are some great savings to be had there, I'd like to know what they are.