Here's your problem with making the PPI and A-Scope models disappear, how are you going to make them reappear when mid 1942 comes along?
I mentioned this the other day to Bubblehead........ the two units are connected at the hip as far as their "output" of SJ Surface Search Radar. It's hard coded. Until they get separated from each other, and the SD Radar output is directed to only the A-Scope.....the PPI gets the SJ Surface Search output, you're just spinning your wheels.
What's it going to take to separate their output? A "Patch" of the hard coded files. Along with a simple command to have an "action" become a "Command" within the game to allow for the covers (that are already modeled in-game).....
.....to become placed where they should, and removed when you want.
The only way the radar works is to have an "overlay" image that is correct in its scale, to match the "output" of the radar sensor. That's been done:
I have this in Optical Targeting Correction, and the latest mod I've been working on...... Fotrs Ultimate. Without having the "scale" represented correctly, the blips and spikes of the A-Scope/PPI are useless. For example, here's the A-Scope that is accurate to "scale" (meaning.....a 1000 yards is 1000 yards) from my work:
I want you to look at something of my A-Scope "overlay" above. Notice where the stock game ends the 4000 yard scale.....that's the lower line scale in the smaller print. It's off to the right hand side of the scope at what is "estimated" at about 4400 to 4500 yards compared to the scale above it. My "center scale" is accurate in radar output, not the stock game scale at the bottom of the screen! At distances of only 4000 yards you'll get the stock game to give you a 400 yard error when a "spike is shown on the A-Scope. Notice the "spike" above is at the 3000 yard distance if your using the lower 4000 yard scale (there is also the 32,000 and 60,000 yard scale lines too, depending on which level of radar output you're using), that 3000 yard "spike" on my scale ends up at about 2700/2800 yards on the stock scale. I've not been able to remove the stock game line from my A-Scope "overlay", it's hard coded too. BUT, you'll get an accurate reading using my mod when compared to stock.
Again, the problem is in getting the game to accept additional commands, scripts, to allow things to work as expected. Until we have someone willing to open the hard coded files to add/change the way the game operates, we can only "mask" an issue to a very limited point.