Notifications are useful to me on a mobile formfactor like a smartphone, but on a pc/tablet their frankly distracting. To me notificatoins have no value in windows 10 for me. I never use it really. For me the function of the action center is more valuable the way it works in windows 8, like the charmsbar, with search and settings, -quick actions-, for me being the main reasons to go there. Windows has had a legacy of being bombarded with notications, even in previous itterations of windows, to point of annoyance and distracting and counterproductive for me. Windows has enough alternatives for notifcaitons in action center, like the familiar notification popups from the web, apps and OS, live tile notifications on the tiles and counter badges on pinned icons on the taskbar and the apps/legacy programs themselves. Enough distraction to keep one busy from the real task at hand.
Instead I would like to see the windows/cortana search bar moved to the action center. That would be more valuable to me.