That sounds more like modernizing Dashboard to me, but either way, Notification Center as it stands now is a terrible substitute. Let's just hope that if they DO kill Dashboard, someone comes up with a good 3rd-party replacement.
Yep! Killing three birds with one stone. Modernizing dashboard, updating Notification Center and unifying design language between operating systems. Simple and effective and not crammed into the sidebar on a giant widescreen display. Too bad I don't work at Apple. Heck, they could probably just combine it with Launch Pad and make it the first page with the search at the top. I rarely click an icon anyway and just start typing. Or at the least they could make it a screen to the left like the home screen in iOS 9. Why not unity spotlight there too…am I going too far? Haha. Lots of simplification could happen that would actually make it easier and faster to use.