Error/Message reporting common to the different interfaces
It would be nice to have message reporting that would be seen by the user. For example in a graphical interface, a pop up window would inform him that connection to the stream failed, or that the codec is unknown or even prompt for a password if needed. This would be used for important messages that are usually ouput to stdout/stderr.
I don't know how other people feel about that but i think that it would really improve usability and make people less confused regarding some problems they encounter when using VLC.