Since Djblets is still actively developed, I think it still has purpose:)
Link to the current repository: http://github.com/djblets/djblets
auth
: django-registration
might be better for this, depends on your needs I suppose.
datagrid
: I don't know a single other decent datagrid app for Django, doesn't mean there are none. But I don't know them ;)
rooturl
: not sure if that's really that useful. I don't see much advantage in that compared to the normal url system.
decorators
: writing tags in Django is still a lot of work but this makes it quite easy. Definately worth it. Although Django has quite a few similar shortcuts these days.
JSONField
: can definately be handy, but a lot of the times the wrong solution ;)
siteconfig
: I believe that there are several projects that focus on this specifically, just find one that you like (or think of your own structure, which is what I did).
All in all it comes down to, do you find the extensions useful. Personally I think that the datagrid
and the decorators
are the most useful parts.
But instead of using decorators
to make writing tags easier you could also try Jinja2
as a template parser which allows multiple and named arguments for filters. Or simply calling functions directly. That way you rarely need template tags.