I don't think that is a moot point at all. It is Apple's job to come of with new developments. What would improve this version of OS X would be the introduction of new major capabilities.
Imagine something like Finder being thrown out all together for something completely new. Something that blows Finder and Explorer out of the water. Something "cool" and exciting. Something to brag about. Adding these notification "features" are just that. A feature. They do not introduce mass functionality gains and ML is made up of 200+, little incremental, great changes. I think ML is solid, but I think that Apple needs to change focus and really start the development of the next generation OS. I think they are and I hope we will get a glimpse sometime soon.
Gizmodo does a great job of explaining my same point. While ML is great, Apple could have done SO much more with an OS upgrade. I don't have any brilliant ideas to specifically introduce. But what I love is change. And moving forward, change, much like what Microsoft is doing, will really form the path for the progression of future Operating Systems. And if Apple can come up with something original, the same way Microsoft did, I think it will make for a truly "exciting" release.
Right now I'm waiting for my ML redemption code. And sadly, I'm kind of okay with waiting a little while. Sure, I'm disappointed I don't have the download right now, but I'd be more upset if I were truly ecstatic for the release. And that's what is missing. The excitement and thrill of a new OS. ML is here and it's nice and alright, but I want something awesome. That is what I mean by more. I wanted something exciting, outstanding, never thought of before. I want to be blown away by a keynote for OS X, not just iOS.
I hope that helps you understand.