Support for ALTER TABLE statements

For example if I type in "ALTER TABLE " I don't get the list of tables in the database (as I would if I typed "UPDATE " for example). Similarly if I then type "ALTER COLUMN " I don't get prompted with column names (as I would if I typed "UPDATE MyTable SET ").

Lastly if I try and format an ALTER TABLE statement it all gets put on a single line. It would be nice to be able to format an ALTER TABLE statement on multiple lines, for example breaking before an ALTER COLUMN or ADD keywords.