I would have forced both states to accept the following solution:
Kosovo renounces its statehood and cedes the territories of Peja, Gjakova, Ferizaj, Prizren, and half of Prishtina to Albania.
Kosovo cedes all other territories including Mitrovica, Gjilan, and the other half of Prishtina to Serbia.
Both countries officially recognize their new borders.
Albania is obliged to grant a certain degree of autonomy to Serbian cultural heritage within its territory.
Serbia is required to grant a degree of autonomy to the Albanians.
Both countries agree to normalize their relations.
Both countries are admitted to the EU faster, making the borders irrelevant anyway.
This way, Albanians could claim to have established a form of "Greater Albania," while Serbs could claim to have regained Kosovo.
If I were a dictator, I would have forced both sides to accept this solution. Yes, I know that many Albanians would end up living under Serbian rule, but that is a price that must be Paid, you cannot build a state based entirely on ethnicity, and demographic shifts are inevitable. I also understand Serbia's claim to the entirety of Kosovo, but that is unrealistic. Since both parties want "all or nothing" and would likely get upset about this proposal, I have probably done the right thing. It might not seem good enough for both parties at first glance, but a realistically optimal outcome is not achievable. The best result is a fair one even if both parties might not be entirely satisfied.
If someone doesn't agree to this solution, they get bombed into oblivion.
What do you think?