I would pay a reasonable amount for a Django-tailored IDE or plug-in. I don't know what I mean by reasonable, but maye it helps to know that I would not pay more than $75, and I would only pay the $75 if the tool was really awesome.
Now, Django specific features:
- Seamless integration with Google Apps
(get me the urchin, the license for
Google Maps, and put it in my
templates)
- Full support for the templating engine (details in the other answers you have received)
- Lorem ipsum generation (Django has it, just make it simpler)
- Prepackaged modules for common tasks (e.g. give me a full login page with template an all)
- Link within the code for Django documentation and examples (e.g. Django snippets)
- One-click for multi-browser comparison
- Full CSS support
- An object explorer (along the lines of the Django-admin, but off-line)
- A color palette with cool combinations (say, blue-based, orange-based)
- Wizard for uploading the local project to Webfaction or similar hosting solution
If I can think of anything else I will edit the answer.
Good luck in designing your product!