Hi Marc,
I wrote a blog post[1] on my second task which is ajaxify the ''Add a new user" option in in db->privileges.
Next week I'll start with ajaxify the "Insert for table" in db->structure.
[1] - http://coders-view.blogspot.com/2011/06/ajaxify-phpmyadmin-interface-gsoc-20...
Regards, Thilanka.