We did provide a list of things that needed improving a few years ago. We saw some improvement, but I think things have slipped back to how they were. Pit Bull are but one reseller of the kits these factories make (Pit Bull use kits from 3 or 4 different factories), so their influence alone is relatively limited.
Ideally the kits would be made using CNC machines, not manual routing using templates, but that involves capital investment and reducing the number of employees. But whilst labour rates in China are low and the Government pushes for full employment, that's unlikely to happen.
Some of the kits seemed to be of a much higher quality than others, the kits starting with a 'G' for example; but they too can come with fundamental flaws that can ruin them. My GSM-1 has a superb 1-piece body, but I discovered the bridge post holes were about 3mm too close together only after all the finish was on.