Minimal effort setup of Django for webdesigner
How about a static 'showcase' site where all possible UI elements, templates, etc are shown using dummy content. The designer can connect, edit stuff and you merge in the changes in the end. Another option would be a test server with the full application running (kind of like you did it before) but with the option to connect via FTP or whatever the designer prefers.
In the old world I had a pretty ideal development setup going to work together with a webdesigner. Keep in mind we mostly do small/fast projects, so this is how it worked:

I have a staging site on a server (Webfaction or other)
Designer accesses that site and edits templates and assets to his satisfaction
I SSH in regularly to checkin everything into source control, update files from upstream, resolve conflicts

It works brilliantly because the designer does not need to learn git, python, package tools, syncdb, migrations etc. And there's only the one so we don't have any conflicts on staging either.
Now the problem is in the new world under Heroku, this is not possible. Or is it? In any way, I would like your advice on a development setup that caters to those who are not technical.