I think there's a few annoying things. For example, not having a simple right-click on the touchpad of the MBP. Not being able to cut-paste or create folders as easily as windows.
I just switched to a MBP and love it but there's a few things that are very annoying.
Right click, tap/click with 2 fingers or, if you are on the newer systems with the glass trackpads, you set the bottom right section to be the right click zone. And you click there like you would on a PC.
Cut/Paste. Cannot help you with that in Finder, but I can understand where you are coming from. I don't really notice the absence that much anymore, but I may have just gotten used to it. Try PathFinder, I think that it has Cut/Paste, but I have only used it briefly.
Creating Folders... CMD+Shift+N. What is it in Windows?
For the other issues, while I can respect that sometimes you do actually want to fullscreen something, I sort of feel like that mentality has been forced onto users. As an example, I have a 1920*1080 monitor at home, why would I want to have my browser full screened, all the time? I wouldn't. The same goes for almost everything on my system (and this is Windows 7, not OS X). In OS X, the reason that some things will full screen and others will not is that the (+) button doesn't full screen, it does what is called a 'Smart Zoom' IIRC. Meaning that it will resize the window to accommodate the contents, and then stop there. And yes, it is another example of Apple thinking for you, and Evil Lord Jobs forcing his ways upon the unwitting, uneducated, overfunded, douchy, latte-swilling, hipster MacTards. Deal with it.
Oh, and very possibly just to shut you people up, the next version does have full screen maximizing, are you happy now?