Isn't the standard library the place where packages go to die?
Isn't the reason pip is actually useful because has a nice health release cycle (http://www.pip-installer.org/en/latest/news.html) and isn't frozen into the standard-library ice age of the past?
Won't this make it even harder to build a compliant version of python that runs on mobile devices where you can't install packages (>_> iOS)?
I get that it's convenient, I'm not 100% convinced its a good idea.
Edit: Reading the PEP in detail its now clear that this is not bundling pip with python (see 'Including pip directly in the standard library'). This is bundling a pip installer as part of the standard library. Much better.