Um.. I'm just going to have to disagree with you on that. You cannot bitch and moan because OS X doesn't behave like Windows or KDE (which are arguably very similar in terms of their needless complexity when it comes to UI paradigms).
Seriously, a + is difficult and somehow unintuitive? How about File -> New, or Command + N?
Or if you'd just prefer a large unwieldy button that ads to the problem regarding consistency and too much shit on the screen with KDE and Windows...
You just can't use a Mac and expect it to be Windows. You'll be frustrated if you can't get over this part. When I got my first Mac in 2004, I used it at the same time as my PC and had similar issues overcoming things I'd expect to behave like Windows. I decided I'd stop using Windows to try to get over the baggage in expectations I'd have, and now 4 years later I go insane having to deal with some of the idiotic UI issues that plague Windows. Just compare System Preferences to Control Panel...