Although there has been a lot of violence and tension in the past, it is clear that the conflict in the Balkans is finished. Although there are clearly some hard feelings left after centuries of conflict, there has been no major violence in recent times. Independence has been received wll on both sides of the issue.
Kosovo has been a part of Serbia for so long now that I do not believe Serbians would tolerate them under their own rule. Serbia has seen many of its constituents drop from its control recently so to see another nation that it once controlled could plunge them into further disarray.