While useful accuracy of the information that is used as reference is still an issue. As there are still cities that move a few meter on GPS every year due to inaccurate data reference. For us it means a little bit of more security as long as the system is functioning. I will still keep the Sextant and use it to teach math to my kids as well as a good understanding of Navigation. The amount of folks who can not orientate a chart (or in land base terms a map) is horrendous. This was stuff they taught in the very beginning of camping skill in scouts when I was young what has happened.
As for drawing up the lines and laying out the form. There is DeftShip, Solid Works, and AutoCAD type products (I am not employed by any of the those named). Which can design a yacht quite well. The building of her and the balancing of the load is another issue completely.
Enjoy the new system, I know we will in using it as a cross reference and to see what faults are in it.
What you see in the Universe, sees you.