This is why he hasn't introduced a 1950 47mm base, 47mm auto, and all the other watches you've listed. If you were the CEO of Panerai, would you want to release all these models at the same time? Heck no. Panerai is a business and here to generate profits for its parent company Richemont, so it is in Panerai's best interest to maximize profits by slowly introducing all the models you've suggested.
It would be suicide to release all these models in a year or 2. Why expose all your artillery in the first battle? You need to save some to win the war!
And the PAM232, my guess for the reason why it hasn't taken off is because it's too similar to the PAM210. The PAM210 is a 45mm Radiomir base (which first better in general on the wrist for most people) and there's the 47mm base PAM232. Same movement in both, and frankly too close of the same watch IMO, and so maybe that's why the watch hasn't done will as compared to the PAM249.
If Panerai made a 45mm PAM249 the year before, I bet you the 47mm PAN249 the following year wouldn't fair that well. Just some food for thought
Cheers,
Anthony