I've never quite understood the "liability" thing with replacement parts or better trigger pulls. If the shooting is justified it won't matter what connector you have in the Glock. If the shooting is not justified it won't matter what connector you have in the Glock. If you miss your intended target (bad guy) and hit something of value or someone not threatening you, you have both a legal and a liability problem. I would think a better, more controllable trigger pull would be advantageous rather than a liability.
My $.02 worth,