Looks like I am late to the party. I am with the crowd that advises to park at the very edge of the lot in a single spot. You have to pick your battles. The risk of getting the car keyed is rather high and aside from your pride, there isn't anything to lose by just parking it in a single spot from now on. It will scratch your pride a little - but not the car.
Then you can fantasize how you lay waiting with a sniper rifle on top of the building watching over your car that you now parked taking up four spaces.
George