I think you missed the fact that this lathe has manual change gears, and not a QCGB. With manual change gears, they have to be manually switched out to change feed rates. For example: if I were turning something to size, I might want .015" per rev to rough out, and .003" per rev to finish. If I were using the gear train, I would have to manually change the gears to accomplish this. By bypassing the gear train and using an electric driven lead screw, I can adjust the feed with a twist of a knob. General turning is about 90% of a lathes use. Besides that, it takes wear and tear off the gear train and is lots quieter. The limit switch is a bonus.
One aspect that probably gets overlooked, is the fact that the half nut can still used to feed, and is 2.77 times faster than the power feed rate. This means that in that mode, the speed of the screw can still be adjusted for a roughing cut, and then be changed over to the power feed for a finer cut. It's like 2 speeds and infinitely adjustable.
Believe me.....if you had a chance to run this machine, you'll wonder why yours is not set up the same way!