It will be very helpful if you add visual editor of
extended foreign keys statements like ON DELETE
CASCADE, ON UPDATE SET NULL etc for Inno DB tables.
Now it is enough hard work to change foreign keys with
these statements because these definitions aren't
displayed in the references and can be viewed only with
SHOW CREATE TABLE query. Also one way to change them is
removing of foreign key (via ALTER TABLE DROP FOREIGN
KEY query) and creating of new foreign key manually
(via ALTER TABLE ADD FOREIGN KEY query).
Because MySQL stands on the way to become reliable DB
server with support of data integrity checking, I think
you need to add such functions in nearest releases.