The railmaster and planet ocean have been around for a couple years, at the height of the trend. Panerai fans among watch connoisseurs are dwindling and the price hikes brought about by in-house movements are making them inaccessible to many potential customers. The only people buying huge Hublots are rappers and toolbags like Diego Maradona above. Rolex's bigger datejust is still smaller than your ideal, and is being made alongside the standard 36mm version.
I agree that watches probably will never gravitate to the 33-35mm models of old. However, I think it's likely that they'll find a comfortable average of about 38-42mm.
Agreed. Also, some very respectable companies didn't jump on the massive-watch-across-the-board-trend.