Hopefully I'm not wrong by agree-ing, that this idea hasn't being postet yet. Well, even I'm pretty new here on magento, I miss a very important option to link pages external via the main menu. Let me explain what I mean; Since approx. 10 years I'm working with joomla! Because I now can clearly see, that magento is way better, faster and much more reliable than virtuemart (common joomla! online shop extension), I would love to integrate magento into my joomlasite, by linking back and forward via the main menu bar. I'm already working at a dublicate template for magento. If such a new Option would exist, than other cms user could use magento as they'r online store. Couldn't it be useful to add or to edit a category widget, which can point to a custom external link?
Have a good day and best regards!