Bravo, you hit the nail on the head again. Yes the "D-23 will be used at the expense of the D-25", just as it should be. You already agreed that the evidence presented compels you to believe the D-23 is a more fitting example but having said that, you now have to, ever so patronizingly, quote by quote dismiss every contributor to the thread.
Please start a thread arguing why your 109g6 sub variant and your Seafire Mk III with a whopping 1200 examples should be put in to enrich the game. I'm sure without another Karnak to tear it down the crickets will be deafening.
Look, I'll be happy for you guys if you get it. I am arguing intellectually here, not emotionally. Part of the reason I am doing so is to push you guys to improve your arguments and partially because I enjoy the back and forth debate. The Bf109G-6/AS and Seafire Mk III are just examples and not intended to be seen as the specific alternatives.
The problem you have failed to address is what is significantly gained out of adding the D-23. The D-25 already works just fine as a substitute for the D-23. It is not perfectly accurate, but it is very close. As a counter example, the Bf109G-6 or Bf109G-14 is not just fine as a substitute for the Bf109G-6/AS as their performance envelopes are very different.
The fact that the D-23 was produced is such large numbers means it ought to have been added instead of the D-25, but that ship has sailed. We now have the D-25 which makes the production numbers of the D-23 completely moot from the standpoint of what the D-23 adds to the game for anybody other than die hard P-47 fans. The Seafire Mk III's 1200 production is only significant in that its performance is also very different from the Seafire Mk II's. Were its performance almost exactly the same as the Mk II, only it had folding wings then its much higher production numbers would be completely irrelevant as it wouldn't add anything to the game due to the Mk II being a fine stand in for it.
Even completely different aircraft can fall into this. There is little reason to add the Halifax when AH already has the Lancaster even though there is some performance differences and capability differences between them. Were the resources needed to add the Halifax as slight as those needed to add the P-47D-23, Bf109G-6/AS, Seafire Mk III or numerous other aircraft it would probably be worth adding, but as a completely new heavy bomber I simply can't see the resources needed to add it to the game as a good investment given how adequately the Lancaster works as a stand in for the Halifax.
Bringing this back to the P-47D-23 we are looking at a some workload to add it to the game as it has some graphical differences compared to the D-11, yet it seems to offer almost nothing other than greater historical visual accuracy compared to using the P-47D-25 in the same setting. But this is a game in which the scenario creators regularly do things like using the 1942 Spitfire F.Mk IX in a 1945 setting, where the Spitfire Mk XVI (Spitfire LF.Mk IXe) ought to be used, for balance purposes. It is, at this stage of planeset completion, very hard to see the P-47D-23 as a good use of resources when the very similar P-47D-25 is existent within the game. Were the planeset significantly more fleshed out then that kind of granularity makes more sense to push for, but as it stands I strongly believe that developer resources would be better put to fleshing out the planeset's bigger gaps than closing a very small gap as there is between the P-47D-25 and P-47D-23.