Less moving parts refers to the back swing itself. Prior to the no-lift, most delivery troubleshooting (other than balance) revolved around the direction of the back swing and the down swing. With fewer moving parts, no-lift the delivery is much smaller resulting in a "softer" draw delivery with good "feel".
Losing the "C" Curve The affect of the hack configuration and placement was rarely discussed as a delivery variable. Because of this, it was probably the most under diagnosed problem in the back swing delivery. The common problem of the "C" curve was created by the hack placement. The rules state that each hack must be three inches from the centerline. This means the hacks were roughly six inches apart. If you place your foot straight in the hack (this is what was taught), there is not enough room between the ankle and the centerline to draw the rock back straight (on the line of delivery). Most curlers who kept their foot straight in the hack had to draw the rock back (back swing) outside the line of delivery to clear the ankle. This resulted in the rock coming back down across the line and in front of the body. This is the "C" curve. The most proficient back swingers twisted their foot in the hack to avoid this. This was never taught in any curling clinic but was absolutely necessary to maintain the line of delivery. Since the rock is not swung in the no-lift, this is not a factor.
Even with the no-lift delivery, there are still opportunities to create the "C". Avoid pulling the rock in front of your body as you slide out of the hack. This happens much less with fewer moving parts..........................