I have actually used this type of strategy before to varying degrees of success. In a standard 5x5 league, if you can lock down all of the pitching cats by fielding a rotation of Lincecum, Santana, Haren, and Peavy, as well as a bullpen of Papelbon, Lidge, and BJ Ryan, you\'ve won 50% of the stats just about every week. All you\'d have to do is fill your roster with a bunch a speed demons like Tavares and Pierre to lock down steals and you\'ve got more than half the stats. This would result in you winning every week.
The problem with this is that pitchers are very inconsistent, and wins (and in your case, losses), are just as much team dependant as they are pitcher dependant. If you can\'t lock down all of the potcher stats, icluding wins, you\'re going to lose a lot of matchups since you will be getting smoked in thepower stats.
BAsically, this is a very high risk/high reward strategy that can be very fun to do if for no other reason than to screw with your fellow owners during the draft. However if you;re new to the game I\'d suggest going the more traditional route, as it is more forgiving, in my opinion.