Two things are badly, badly wrong with the notification center:
1. Lack of options to set snooze to remind in 1 hour, 1 day etc. just like the original iCal. This has rendered my Mac totally useless in my task management.
2. Lack of options to set aler banner location. Top right is extremely inconvenient for me. I've always got stuff up there I need to access frequently in my workflow. Safari tabs, bookmarks, Safari Reader, website menus, etc. Now I'm compelled to "snooze" various alerts incessantly to keep working. Option to display alerts in other screen corners should be a no brainer. Bottom right is much better, well - it should be easy to give the user many options with this.
I am skeptical about the direction Apple is going with the OS. It gets more bloated every time, and clarity, functionality is compromised. Maybe they release too soon, without properly thinking / testing. No longer can one say "it just works", because it frequently doesn't. I'm sure there's a lot of amazing stuff going on deep inside the code, but the improvements are not readily apparent to the user. They used to be so good at usability.
Very sloppy. I still love my Mac, and the OS, too, but for the first time in almost 10 years I'm developing an interest in Windows, they say Windows 7 is pretty good.
Come on, Apple. A lot of this stuff should be pretty basic. Let's hope the next update will fix these things. Looking forward to it.