I would suggest the Hub be directly visible (ie do not need to touch Hub to see the list of messages). The rest of the items under Hub should simply be removed and put as normal icons on the desktop ie email or text messaging etc. Also this new hub should have the option to limit by time or number in addition to type of message
What I mean to say is that the hub should be a list of future appts or received email headers or missed calls etc. it should not be a list of apps. Clicking on the notification should then move us to the app. I can't find any standard notification at all outside the sleep screen on the system and only notifications are stars on app icons such as whatsapp.