Thanks for the update, slibenli.
regarding the first "bug" you list in your readme: "terrain artifacts (e.g. appears lower than it acually is)":
After trying your Il2ge on different maps, I think this "bug" greatly improves some of them, i.e. those with terrain >1000m ASL.
At these higher altitudes, standard Il2 performs poorly, rendering mountain & hill-tops as far too angular. So, if you could somehow retain part of this "bug", as a terrain smoothing option, it could be a help rather than a hindrance. I note this bug can reduce the mountains' max. height, but that reduction is very slight indeed, and only noticeable via the floating trees. The bug's far greater effect is to smooth the shape of the mountains or hills, and that is an improvement our higher altitude maps could do with.
f_f (map modder)