The only issue is how you can deliver that on your site. Not everyone has the skills or the confidence to just paste code straight into their theme.
This is why we wrote the twomin plugin. It allows admins to find a solution for CSS or JScript using their browser inspector, and then to apply that on their site for their eyes only.
When they are happy the fix works as wanted, the code can be delivered to everyone through the plugin.
Once everyone is happy that no further issues have ben caused, the code can then be incorporated into the theme.