I wanted to add a new topic with much the same thought but noticed this one so I thought I'd add to it.
I had an Idea that might extend the landscapes;
I know that some other flight sims use maps that are loaded in when your airplane gets close to the edge of your current map. I envision a matrix of maps which might be extended quite a bit .... perhaps indefinitely if a person should wish.
I don't know what might be your Ideals here ... I'm aware that this is an RC sim, therefore this might be seen as unnecessary, however I could appreciate it as an added feature.
Another Idea about that white .... perhaps that could be colored green or earthtone ... I know that the fog in the distance adds the white ... I don't know if there is a simple way to do both ....perhaps a user defined color or bitmap pattern ... I'd hate to loose the realism of the fog though.
Nevertheless, you've done a great job with what exists now .... but if you'd like another challenge ...
Perry