So I guess you could refer to "Molexing" major components under the playfield as a personal preference. Some playfields can be pretty daunting. It is amazing how much hardware you can remove in an organized manner by using Molex connections. I personally don't like to de-solder coils and then try to keep track of the wiring...or leave them attached the harness to drag to the new playfield. I do this with all playfield swaps.