Wrong.
If you add the 4500 exhumations (.pdf) from 1999 through September of 2002 to those performed after that through 2004 (an additional 907 (.pdf)), you get 4607 exhumations in Kosovo.
Since not all of those have been identified as of this time, you have a point as to their not all being K-Albanians, but the discovery of the 1,100 bodies in Serbia proper renders it all moot - Milosevic's forces targeted K-Albanian civilians, and lost Kosovo for Serbia.
Wrong. First of all, I don't trust the numbers you have cited, because I have not seen them in the larger media - they would have been all over that. The government that replaced Slobbo in FRY had a vested interest in having him removed from the country for a war crimes trial.
And once again, the conflict in Kosovo was a low-grade civil war prior to Nato intervention. For all the talk of genocide and ethnic cleansing by the Serbs, what happened after the Nato intervention? Genocide and ethnic cleansing of Serbs. And that you cannot spin away.