Although I agree the Rolex size is a classic unlikely to change I respectfully disagree with your market statement. If you look at the SIHH 2010 large watches are here to stay. I keep hearing that the trend is back to small but I haven't seen any proof of that anywhere.
To answer the OP I wish Rolex would release a SD type with a 42-44mm case. I also agree the DSSD has a tiny dial for such a beast. I don't get why would Rolex release something so thick with everything else tiny (dial, bracelet, clasp).