Hi,
It appears that your preferred feature is only available on a Windows 8.1 RT build. However, we appreciate your time in bringing your concern to our attention.
We suggest that you submit this as your entry to our Feedback forum at http://connect.microsoft.com/. Rest assured that our Engineering team will take the necessary action to improve Windows features as we always value our customer's needs.
If you wish to push through on getting the classic-ish 'Start' menu, please be advised that the only way to get Windows RT 8.1 is by updating a computer or tablet that already has Windows RT pre-installed.
You may visit the following links below to learn more about Windows RT 8.1.
Thank you.