When the complete watch with this(or similar) movement came out way back when...no one wanted to buy the whole watch. It looks like they may have fixed the stem problem too.
That top bridge piece I showed above can be had for 2-300$...same as the rotor. So for 600$ or so you have a very good looking movement and hopefully this pans out to be a great running movement.
I think I am going to order one for my TC I still wish they did this with the 1520 and 1570....Freddy's right, as gen parts are getting harder to get every day, more gen owners are going to be using more aftermarket parts...there should be a good market for several different Rolex movement clones.