Many features are indeed discussed on this bug tracker, but for a big change like the one you propose we like to reach out to all of python-dev or all people on python-ideas to discuss pros and cons.  The devguide should explain this in a little more detail.

I don't know if the google group you posted to is a read-only or two-way mirror; the real list is found at https://mail.python.org/mailman/listinfo/python-ideas