I would say IMO there will be more complexity then the motor. I just watched a video on that, I'm not interested. So far all I have seen the roll out do is display the edge panel. I sure hope Samsung is planning on doing more then that with it. I as of this point see no reason for it, and to top it off people thought $2,000 was expensive for the fold. How's $2,500 sound for the rollable? That phone will start with a 2 in the price, the second number will probably be 2 or more. I also bet the battery will be smaller, no enclosed Spen. It definitely will get the wow factor, I see that screen jamming, possibly breaking, one video I seen it wrinkle just a bit rolling back in. It will definitely be something to watch, but I'll let the young go in debt and test it out for me, maybe we will see 4 year financing.
I'll look forward to your reviews on it next fall if it releases as the rumor mill is speculating. I'll review the fold 4. It'll be interesting to see that's for sure.