excluding core modules css file

I think that excluding core modules css file ( user, node, search, menu, file ...) can make the theme more consistent, clear and clean , It can be done useing _css_alter() or in .info file.

The Tao theme uses this method.

code from Tao:

 $exclude = array(
    'misc/vertical-tabs.css' => FALSE,
    'modules/aggregator/aggregator.css' => FALSE,
    'modules/block/block.css' => FALSE,
    'modules/book/book.css' => FALSE,
    'modules/comment/comment.css' => FALSE,
    'modules/dblog/dblog.css' => FALSE,
    'modules/file/file.css' => FALSE,
    'modules/filter/filter.css' => FALSE,
    'modules/forum/forum.css' => FALSE,
    'modules/help/help.css' => FALSE,
    'modules/menu/menu.css' => FALSE,
    'modules/node/node.css' => FALSE,
    'modules/openid/openid.css' => FALSE,
    'modules/poll/poll.css' => FALSE,
    'modules/profile/profile.css' => FALSE,
    'modules/search/search.css' => FALSE,
    'modules/statistics/statistics.css' => FALSE,
    'modules/syslog/syslog.css' => FALSE,
    'modules/system/admin.css' => FALSE,
    'modules/system/maintenance.css' => FALSE,
    'modules/system/system.css' => FALSE,
    'modules/system/system.admin.css' => FALSE,
    'modules/system/system.base.css' => FALSE,
    'modules/system/system.maintenance.css' => FALSE,
    'modules/system/system.menus.css' => FALSE,
    'modules/system/system.messages.css' => FALSE,
    'modules/system/system.theme.css' => FALSE,
    'modules/taxonomy/taxonomy.css' => FALSE,
    'modules/tracker/tracker.css' => FALSE,
    'modules/update/update.css' => FALSE,
    'modules/user/user.css' => FALSE,
	
  );
  $css = array_diff_key($css, $exclude);

(rtl theme files are not listed)

Also a section in theme settting can list all css files from theme, core modules and contr. modules and let user to select which themes to exclud.