Combine sugar, ½ cup water, cinnamon sticks, and sea salt in a small saucepan, and bring to a boil over medium. Boil, stirring occasionally, until cinnamon flavor is infused, about 5 minutes. Remove saucepan from heat, and let mixture steep at room temperature about 1 hour. Remove and discard cinnamon sticks.
Whisk together pomegranate juice, brandy, and ¼ cup cinnamon syrup (or more to taste) in a large pitcher. Stir in pear, persimmon, orange, lime, and pomegranate arils. Chill until flavors combine, at least 4 hours or up to 12 hours.
Stir about 2 ½ cups Lambrusco into chilled pomegranate juice mixture. Divide sangria with fruit evenly among ice-filled glasses. Top each glass with about 1 tablespoon remaining Lambrusco. Serve immediately.
