I mean, the design is already completed. The development cost has already been paid. It is cheaper than creating an entirely new system.
Even a review and partial redesign with new materials and methods would be less costly to do than an entirely new design.
Even a review and partial redesign with new materials and methods would be less costly to do than an entirely new design.
Even if that were true (it's not), as I said, there was nothing inexpensive about Saturn. You could hand it to NASA for Christmas, with all the facilities, and they still couldn't afford to operate it, any more than they could then. Its cost was why we quit going to the moon. And Constellation would have been worse.
We have to get NASA out of the launch business completely, and not just for planetary probes, so it can focus on actual exploration.