Hard to believe anyone would mandate, agree with all your reasons why one wouldn't. Here's a link to a an older article regarding (because of the comma in the address you'll have to copy/paste to your browser)...
http://au.fourfourtwo.com/news/102214,ffas-443-future-in-shakeup.aspx
Link to an article a couple of days ago indicating the Australian women would be "alternate between a 4-4-2 and 4-3-3 formation" at the World Cup...
http://thesoccerroom.com/?p=28617
