Place large piece of foil on work surface. Stir sugar, honey, butter and salt in heavy medium skillet over medium-low heat until sugar dissolves, butter melts and syrup comes to simmer. Add pecans. Cook until syrup turns deep caramel color and bubbles thickly, stirring nuts occasionally to coat, about 9 minutes. Scrape onto foil. Working quickly, separate nuts with spoon. Cool completely. Place in airtight container. (Can be made 3 days ahead. Store at room temperature.)
Position rack in lowest third of oven and preheat to 350°F. Roll out dough disk on floured surface to 12- to 13-inch round. Transfer to 9-inch-diameter glass pie dish. Fold overhang under; crimp edge, forming high-standing rim.
Stir sugar and next 5 ingredients in large bowl. Whisk in pumpkin and honey, then cream and 3 eggs. Beat 1 egg in small bowl to blend. Brush inside of crust with some of beaten egg. Pour filling into crust.
Bake pie until filling is slightly puffed and begins to crack at edges, covering crust with foil if browning too quickly, about 1 hour. Cool on rack. (Can be made 8 hours ahead. Store at room temperature.)
Make topping: Using electric mixer, beat cream and honey in medium bowl until stiff peaks form. Spoon into pastry bag fitted with star tip. Pipe rosettes of cream atop pie. Garnish with candied nuts. Serve, passing extra nuts separately.