Equivalent features in Django:

* Gem Dependencies -- this would be nice

* Dirty tracking with partial updates: http://code.djangoproject.com/ticket/4102

* has_finder in the form of named_scope -- not sure I understand, but these look like custom managers: http://www.djangoproject.com/documentation/model-api/#custom...

* Built-in timezone support: http://www.djangoproject.com/documentation/settings/#time-zo...

* Better caching infrastructure: http://www.djangoproject.com/documentation/cache/