Exporting is still in the works. If you have specific request for what you'd like to see (besides iGTD), please send them here:
omnifocus@omnigroup.com. You can also reach this via the menu in OmniFocus (Help > Send Feedback).
If you have any specific requests, we do have the
OmniFocus Extras forum. If you don't find it there, there's also a place for requests.
Thanks!