Building Chrome Packaged Apps seems to be an interesting way to deliver apps. The line between an all-in-one web page and a packaged app are very close. The benefit of the packaged app is that most of the work of serving the page is on the client instead of the server. (rendering)
The casual use does not really need a local install but a power user just wants the data. It simply opens the possibilities especially for power users … and the additional functionality(APIs) that packaged apps receive.