I honestly don't see the point of assigning wins or losses to individual players at all in baseball, especially in this era of pitching. I'd be fine ditching it as a stat all together.
If it is kept around though, why not start getting position players involved too? If Correa hits a 3 run bomb and throws out a runner at the plate i think that should be a W. 0-3 with RISP and an error? Thats an L. Stuff in between can be a no decision at the discretion of the official scorer