Still looking at ggMax for things that might need to be improved along the way. I have noticed the lack of proper rendering inside of buildings, it don't represent lifelike lighting. Shading and shadows will need some work. There is lot to like though about most of the current features.
Just taking a look at custom entities for now...
The attachments below are from GG Classic, illustrates how the transparent grass/ground cover help transition the tree bases with the terrain.
Also shows a few new trees. Plus decent shadows and shading on the buildings and terrain. Check it out ....
Windows 10 creator,64 bit| Intel i7-7700 @3.60GHZ Quad|CPU PASSMARK 10,794|Memory 16GB |NVIDIA GEFORCE GTX 1060|GPU PASSMARK 9,569