Class decoration was discussed back when (you can search for the thread in python-dev); not as an alias to metaclasses but discussed as having exactly the same semantics as function decoration. Maybe the idea has more merit as being another way of setting the __metaclass__ attribute; on the other hand: it doesn't increase visibility and what is does and how it does it is very different from that of function decoration; so perhaps not.
-- http://mail.python.org/mailman/listinfo/python-list
