I noticed @JohnAlbin added an arguments to _base.scss, which enable underscore & star hacks in various locations based on whether or not the user wishes to support legacy IE versions.
Is this in an effort to rid Zen of conditional stylesheets?
We could move the standard IE conditional CSS files over to underscore/star hacks if that's the direction we're going. But perhaps it's just in an effort to provide the best Sass/Compass experience possible.
Perhaps ie classes should be moved to the html element: