Option to define default names for constraints in ER Modeler.  The ability to define the default constraint names format.  Something that supports variable substitution, like the following:

pk_${table}
fk_${table}_${reference}

Where the format of that default constraint name can be controlled by the user.  Some people prefer "pk_TABLE" while others prefer "TABLE_pk".  Same can be said with all types of constraints (foreign key, unique, check, etc...).

Having these names prefilled in my expected format is a time saver that I'm sure everyone would appreciate.