How to Make It
Whisk together lime juice, honey, fresh mint, ginger, dried mint, and 1/2 teaspoon of the salt in a small bowl. Drizzle in oil, whisking, until blended. Place watermelon and tomatoes in a large ziplock plastic bag. Pour in lime dressing, squeeze air out of bag, and seal. Chill 30 minutes.
Transfer watermelon and tomatoes to a large bowl, reserving marinade in bag. Toss watermelon mixture with shallots, 1/4 cup of the reserved marinade, and remaining 1 teaspoon salt. Gently toss in basil and mint. Transfer to a large platter, and sprinkle with crumbled goat cheese. Serve remaining marinade on the side as a dressing.