I don't say you are not correct, but what you are saying in your post (also further down) is not exactly universal experience. Maybe you are very skilled in compiling and have working experience with 3rd party open source libraries, but it's not like this for many other people. Many programmers who knows only Visual Studio will not go to the end of the process successfully...to sum it up, you are making it easier that it is (I mean for new people especially).

Also, replacing the library with newer version don't always work. (for example with QT).

In my work, we have a source tree, and all 3rd party libraries are there, so you know exactly what you are compiling. That's especially helpful when someone new comes to a team - he just download the tree and compiles it from the root, and don't have to fiddle with installing this and installing that. And it doesn't take any more time during normal development, since those libs are compiled only once (the sources doesn't change). But I understand that the open source culture is different in this regard, it's more of a meritocracy. (I have better bragging rights, since I know more ;-)).

Anyway, the more important question is, how do we convince the main bitcoin developers to include visual studio support into the main development branch. ;-)