This request is sort of sherlocking myself because I have both SEO Helper stack and also acquired the Meta Mate plugin. Why does RapidWeaver not handle at minimum Open Graph meta tags? I think that defaults should be defined on the project level. Then can be overwritten on a page by page basis.
On top of Open Graph, it would be nice to optionally support GEO Location tags and maybe Twitter Cards.
Here is a screenshot of my SEO Helper stack.