Everyone at the Merchant has something to sell. The kitchen team: a strong menu of American brasserie fare. The bar staff: terrific cocktails and more than 60 beers, half on draft. The post-6 pm suits that swarm here to drink them: insurance, probably. (Maybe mutual funds.) We’re fully invested in this jumping new joint, where the 40-foot bar’s standing-room-only crowds capture what a revitalized downtown should be: a commerce-friendly crossroads.