1st one makes powerful companies even more powerful. Don't. Please don't. We big boys are overpowered enough.
2nd, OTOH, I like a lot. I remember having set up orders a very specific way to ensure the replacements would arrive exactly when I did need them..... and a production line compression make those aircraft available earlier, sometimes by a full year. So I still had a full year of lease to pay, which was not what I had in mind while ordering the airplane.
Could be a tickbox on the order "do not advance in case of production compression", or so. Don't know how it fits with the current production line model, though.