Considering that most SEO trail behind and do what Google tells the to it does not have much value. The data will not help you in regards to ranking if expanded. Its helps to verify you, who stands behind your Website in an easy way. Having a full blown Schema org structured data header won't speed up your site.
You will have much data exposed in Search engines and if that is what you are after go ahead. I think its not always positive to expose to much. Making a visitor curious is much wiser IMHO.