Ok, you're right about my link #2; I meant to include this link (a reply to the link I actually included):

https://mail.python.org/pipermail/python-dev/2012-March/118047.html

...in which I think the pertinent quote is:

"For direct execution, the proposal trades cross-version
inconsistencies for cross-platform consistency. When we *already have*
a consistent cross-platform mechanism in -m, the inevitable disruption
involved in changing the Windows layout seems very hard to justify."

I'll try to whip up a patch for http://bugs.python.org/issue14302#msg156410  sub-proposal #2:

   2. Change 'Scripts' to 'bin'

...that uses a directory junction to mitigate the inconsistency concern (windows local admin rights / SeCreateSymbolicLinkPrivilege should not be an issue as mklink /j does not require either), unless someone beats me to it.