If you support the project this much, you must be an interesting person to talk to!
I'll do a 1 hour video session (public or private) to discuss the d3 or data visualization topic of your choice. Some things we could do are code together, philosophize or bemoan SVG performance. It's really up to you though!
At this level you are supporting not just the project but the whole d3.js community. Your contribution will be recognized with the logo or name of your choice on the "About" page of the website as well as in the README of the repository.