It occurred to me that the team could make the faq tag a sponsored one here on Meta, so it could have on the tag page (in addition to the image, if any - I don't know if it should even have one) a list of links to the FAQ, about pages and maybe the blog.
How much does it cost? Should we take venture capital to afford it?
edit: we now have a house sidebar ad on the meta home page. I don't think we want to extend this to every page that the sidebar appears on, though.
As for the rest of your proposal, I am folding it into Create a tag homepage/FAQ because I think that would be a way for the community to set up those editorial content tag-specific pages rather than us.
So transfer the "but it needs to be on the tag page!" votes to the above link.