To prepare the herbed cream cheese, in a small bowl, combine the cream cheese, lemon zest, lemon juice, chives and dill. Stir with a wooden spoon until well blended. Transfer to a serving bowl, cover and refrigerate until ready to use.
Preheat an oven to 350F.
Brush the bread on both sides with the melted butter. Arrange in a single layer on a baking sheet and transfer to the oven. Bake until the toast points are golden and slightly crispy, about 15 minutes. Let cool completely.
To assemble, spread the herbed cream cheese on the toast points and place 1/2 to 1 whole slice of salmon on top. Garnish with the onion, capers, hard-cooked eggs and dill sprigs. Arrange on a platter.
Alternatively, arrange the toast points and smoked salmon on platters. Place the herbed cream cheese, onion, capers, hard-cooked eggs and dill sprigs in separate serving bowls and let guests assemble their own hors d’oeuvres. Serves 8 to 10.