Then let's kill all use of backticks in the standard library. There's a lot of them.
That's one reason why we have to support them for a long time; there standard library has widely been used as sample code, so there's likely to be a lot of them elsewhere.
As always, be careful with doing peephole changes to the standard library -- historically, we've seen a 1-5% error rate in these change sets that persists for months or years afterwards.
--Guido van Rossum (home page: http://www.python.org/%7Eguido/)