Preheat broiler. Slice the top off of each tomato. Hollow out each tomato, leaving a firm shell; reserve. (Discard the caps and pulp or reserve for another purpose).
Whisk the liquid eggs with the dill, onion, salt and pepper until well combined. Melt the margarine in a large, non-stick skillet and set over MEDIUM HEAT. Pour the egg mixture into the skillet. Cook, without stirring, for 1 minute. Cook, stirring frequently, for 2-3 minutes or until eggs are fluffy and almost set; remove from heat. Gently stir in the salmon and capers.
Scoop an equal portion of the egg mixture evenly into each hollowed tomato; place on a rimmed baking sheet. Sprinkle each tomato evenly with goat cheese. Broil for 2 to 3 minutes or until cheese is browned. Garnish with additional smoked salmon and dill (if using).