I don't think the devguide is a good place for this unless some editors support features that are particularly interesting for CPython development (e.g. something to check refleaks).
If the features are generic enough that any Python programmer would find them interesting, something could be said in the Python FAQs [0] or the wiki [1].  The FAQs already mention this briefly and have a link to the wiki.

[0]: http://docs.python.org/3/faq/general.html
[1]: https://wiki.python.org/moin/PythonEditors