Originally Posted by JCG:
If you want to kill Wins/Losses, get the folks at GameChanger to drop it. When you finish scoring a game, that's the first thing it wants to know. With GC going strong in LL, travel, and HS that gives a whole new generation of scorekeepers the idea that it's very important.
I assure you that if MLB dropped assigning winning and losing pitchers and making it a part of the official scorer’s report to the Office of the Commissioner, Game Changer would drop it as soon as they could get a programmer to do it. 
Its far more likely that over time the numbers geeks will use it less and less, the same way they’re using BA and ERA less and less, and it will go the way of all other dinosaurs. It may morph into something different and more meaningful, or it may just go away because it really is meaningless.
What numbers baseball uses is really a pretty dynamic thing. FI, if you go to baseball-reference and look up Quality Start, and in the narrative pretty much says it’s a better stat than wins or losses because it’s a lot more objective. But then it goes on to say that Game Score is a metric finding more favor with Sabermetricians. Heck, back in the 70’s no one heard of WHIP, now it may be just as popular as ERA.
The thing is, stats that actually mean something and help make decisions will always be the ones the real baseball people use, while the stats the most people see will always be the most popular.