If a guy cuts corners, you fire him, problem solved. Quality control is the job of the business owner, just like it has always been.

Some of the largest framing contractors in California pay piecework. I posted a link where even IBEW electricians are paid by the piece, I'm a former IBEW journeyman electrician and I doubt those guys cut corners.

Nearly all housing tracts and condo/apartment complexes have workers who are paid by the piece. It's not that novel a concept.

I'm going to take baby steps, approach it cautiously. I'm going to start with finish, trimming out is a repetitious task the lends itself to piecework.