Hello again. Thanks everyone for your patience!
Some more progress below. Earlier I removed many of the super-wide rivers around New Britain that were little more than creeks in reality. I did the same on New Ireland, then realized that the Kandara/Weiten rivers on NI were actually very significant. I couldn't restore the standard Il-2 rivers, as they looked very unrealistic. Rivers never were this title's strongpoint. So I started to experiment with something else.
The screens below show a river represented as part of the landscape texture. Two textures actually, so that the bends in the river do not repeat themselves too often. The reason I went to so much trouble is that this river is very important for navigating from Green Island to Rabaul and back especially if you've taken some damage on the way. I have to say I'm very pleased with the result.
Leave Rabaul and fly east until you hit the New Ireland coast. Locate the Mouth of the Kandara river and fly along it on a heading of 120 degrees. Cross the Hans Meyer Range (the bit in the middle) and keep on until you see the Weiten river. Follow this until you reach the wide bay where it meets the ocean, then fly a precise heading of 090 for another ten minutes to reach Green Island. It's a very small target and easy to miss. It will make you sweat.
I also reworked Rapopo airstrip and gave it some much better textures, as well as added more detail to Tobera. I'll add some shots of them later. Getting late here...
Cheers!