We have England teams for the annual thons, like the source-a-thon too. We also have different mini-thons within our own Project through out the year.
The annual Connect-a-Thon is based on profiles created.
Having a thon that is also based on profiles edited is different. I am not sure how that could be monitored. Someone with more knowledge about that would have to answer that. It is definently an idea though.
You may want to edit your post and add the tags 'projects' 'sourcerers' and 'proposal' those tags will help bring more attention to your post.