There are a few brews I make that I add 1 lb of DME and .5 lb of table sugar just to up the ABV and they all turn out good.
As some will say and I agree if you thin the beer out with too much sugar you loose that mouth feel of the beer, it's well I guess thinner tasting. Almost watered down I guess you could say it simply loses it's flavor.
*** Possum Trot Brewery ***
Beer Primary - Butthead Belgian
Beer Secondary - Belgian Tripel
Bottled - Big Breakfast Stout - Belgian IPA - Butthead Belgian White - Redneck Red - Moose Drool - Dirty Dubbel
Mead Primary - Nuttin
Bottled - Strawberry Trainwreck - Orange Spice - Blueberry Trainwreck