God I really HATE this mentality! People have been saying this for YEARS about Mac OS. All the advanced features are still accessible! If you really know what you're doing you can go into a terminal and do ANYTHING. Why do some people consider it a negative that Apple decided that it makes more sense to make a UI user friendly??
I have to say I do agree with Stefan... .
Yes the "advanced features" are still there OSX is not a locked down OS like iOS but I think the real critique is not that is less usable for advanced users but rather that pretty much all the "new" features seem to focus on the common user even though there could still be a quite a few things done better for more advanced users.
To take the Opera browser as an example. It used to be (and still is) a browser for only a minority of people. In the beginnings about up to 9.5 it was difficult to get used to but extremely quick to work with once you got the hang of it. Today in default install it is mostly the same as any other browser you need to manually set the some checkmarks to get most of the features that actually make it a superior browser (all stuff they cannot put into browser competition reviews).
Earlier there have been great new features for advanced users now all there is are newbie friendly stuff that sometimes is also good for advanced users.
And it is not like there is nothing to improve especially on a big OS like OSX but they just don't care for anybody anymore but the
DAUs (as we call them in German).
I know some people stick with their workflow once it works but I for my part used to often experience new things that greatly improved this or that and I hardly get that anymore from anything but 3rd party software.
Alfred being one such. Vastly superior to Spotlight because it is actually a bit smart. It wouldn't be too hard to make Spotlight a bit smarter. And it isn't even more difficult to use. It is just that most idiots won't even use spotlight so why make it any better. Lets just focus on nice big icons to click on.
BetterTouchTool is the second most useful thing I found on my MBP. It is funny how they always promote one or two new gestures as some totally new awesome feature. If they actually let people who know what they want choose in the first place those people might be much happier. Also BTT enables the Win7 like snap to screen which is extermely useful when working with more than one screen (which more and more people do today). Apple thinks their clientèle doesn't use more than one screen at any time and thus Mission Control and Fullscreen apps not need to account for that. wtf
As for the weakest feature. I would rank the new gestures highest, because I wouldn't actually call that a new feature. That is like making a new short cut a new feature. It may be an improvement but not as a new feature the way I understand the word feature in the software context. But that is just Apple's marketing department (which is keep to much stuff that don't have anything useful to do imo) way of work as can be seen with safari that often has like a hundred new features apparently.
Launchpad is mostly useless but who really cares. Some of those default links in the dock like the expose or spaces are also mostly useless. Most people will though them out. There are there to promote the feature(now here we have an actual feature) so people learn to use it and once they do they will access it probably quicker than though the dock.