> Also it's far from clear that the pre-renaming field names are 
> what is wanted in the auto-generated typename.

I concur.


> Anyway I think I'm probably out at this point.

Okay, marking this as closed.  Thank you for the suggestion.  Sorry this didn't pan out.


> I think Python development is not a good cultural fit
> for me, based on this discussion. 

This particular proposal didn't seem compelling to us.  Other suggestions are welcome.  If you're the same Isaac Morlund who participated in the initial development of namedtuple() ten years ago, then you should know that the design of the _replace() method was principally due to your suggestion.