So if you want to decrease the long take up and reach of the DA, there are a few solutions. Both CZC and CGW offer their own variation on each of these...
GOOD = new disco.
BETTER = new disco and race hammer.
BEST = new disco, race hammer, and reach reduction kit.
Once you have your desired parts, polishing up the action (on your own) will certainly let you "perceive" a shorter, smoother trigger pull. I think the money and effort is worth it.