Sweet & Savory - watermelon salad

Last week my aunt had left over watermelon and we made a savory salad with it. It was delicious. I think we used feta but I think gorgonzola or stilton might be two possibilities as well. Also we used red wine vinegar but I think balsalmic vinegar would be good too. One last change we used mint but I'm thinking cilantro would work well with this. (Pic and directions are below) Ingredients: 1 (5-pound) watermelon 1 Vidalia or other sweet onion 1 can whole black pitted olives 1/4 cup red wine vinegar Salt and pepper 1/2 cup extra-virgin olive oil 2 tablespoons chopped fresh mint 4 ounces feta cheese, crumbled 6 whole mint sprigs Directions: Cut the flesh from the melon and cut into bite size pieces, removing and discarding the seeds, and set aside. Peel and slice the onion into rings. In a small bowl, combine the vinegar, salt, pepper, and whisk until salt is dissolved. Slowly whisk in the olive oil, a few drops at a time. Add in the chopped mint, taste, and adjust seasonings. In a large bowl, combine the melon, onion, black olives and feta. Pour the dressing over the melon mixture and toss gently until everything is coated and evenly mixed. Garnish with mint sprigs.