Frankly, nowadays all these functions are really not useful; if you guys think in this way...
say; Do U really need a moon phase? When will you use your split second chronograph when all the games are recorded by eletronic watches?
what you buy is the craftmanship; apex of watch making and the beauty of mechanics...
That's why a 5004 is much collectable than a 3970/5970 ; and a simple 5959 is much much expensive than other chronographs which you guys sought after...
To me; the most collectable contemporary Pateks are 3939H and 5959;
Think the difficulty of assembly on the movement in such a small watch; and the insist of making small watches in today's atmosphere!
Just MHO
Little