Either choice will not produce a good ending. If Serbia were to take back full control then there would be huge bloodshed between the Albanians and Serbs trying to return, resulting in the Serbian Army going back in. At this point with the Serbs being run out of Kosovo by the Albanian terror campaign. I would say give it independence, Serbia can always get it back later. The only problem is “is this the end point of what the Albanians are wanting?” or is this just a first step in greater agitation.