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The problem is that you still have to have something that lists all of them and thus have something like 1 place to store them. There are ways in doing that without causing that issue.
Not every software is completely OS X native and not every software needs to be. Sometimes you need to install stuff in places that OS X doesn't account for. Java is a good example of that. It needs to be installed in the ~/Library structure that the user by default doesn't have access to (it's hidden). The user friendly approach is by doing all this via a pkg. It also allows to install other things like plists (reason why it is used by sysadmins).
The same thing happens when you are the owner and have full rights in the directory. Sudo is only a tool to change to the required privileges.
They should just do it like Windows does. That way of snapping is useful.
Quite hard to miss.
You can make your own custom colors and labels in Finder Preferences.
Moom is another one and there is BetterSnapTool which is from the same dev as BetterTouchTool but only aimed at doing the snapping (it has a bit more options for snapping).
They are called tags now. The tags can be any word(s) you like but you can only choose between a couple of predefined colours. Tags now also appear with their coloured dots after the file/folder name instead of a bar like it used to be before. Some people want to have the file/folder name coloured but this doesn't work with the new tag system as files/folders can have more than 1 tag. The reason why this was possible previously was because it was a label and you could only use 1 per file/folder.
You use Photos to organise all the photos and to do some basic editing. When you want to do some more extensive editing you want (and need) to go to an external editor. That's what the extension functionality is for as well as expending the built-in editing features with new filters and so on. However, all the photo management is done within Photos. The problem is that this is very very basic. If they can get this up to the same level as say Aperture and Lightroom then I'd say they have a winner.
Push is a server and client thing. Both need to support it and the server has to have it enabled. If the server doesn't support or has it disabled then it won't work. If the client doesn't support it then it won't work either. Iirc Mail does support push with Exchange. I do agree on the Exchange support. Exchange has more features then is supported right now. It would be really cool if we got something like public folders.
You just scan the filesystem for app bundles. No central metadata storage needed. AFAIK, this is what Launchpad does — it simply shows your /Applications folder. As we see now when something is wrong with Launchpad the only way to solve it is to remove the plist. The plist contains all the info and thus you'll lose all the settings. You need to reorder and regroup all the apps. You could scan each time you open the app and not allow any ordering/grouping but that makes it very user unfriendely (too slow and you drown in the amount of apps). There is a way of combating it such as caching but then the problem is with the cache. The auto backup feature in FreeBSD is a simple solution to this. You could even automate the restore (when something is wrong it'll automatically restore the backup).
