Hey
Just as a software engineer that does a lot of Webapps, I can really say that features like the one you suggested sound simple- and sometimes even can be simple to implement... But they can also cause complexities in the software model or have serious implications WRT security.
From what I understand, the zone is a custom app, so its not exactly like installing a library or a feature or whatnot...
Maybe I'm wrong- but I don't the zone is not a trivial app and probably took a lot of thought to put together.
Davin L.