Hi,
I had discussed this in the past and all of these nice functions will be added in future version. I also was suggest and creating , adding or deleting normals and faces on terrain to able to make entrances in underground levels. Another nice idea is creating more primitive 3D objects , like cone , sphere , torus , pyramid , hexagon and adding boolean operations , merge or subtraction surfaces and objects.
The next version of leadwerks engine took some time. The editor needs more tools to be added. Most of the 3D modeling programs have a lots of advanced tools. Also the maps exported from 3D world studio must be fully compatible.
I tried to export one map in B3D and I imported in Leadwerks engine and I wasn't able to edit all separated objects in the scene, all was merged as a single object. More tools like texturing and uv mapping or unwrap texturing must be added.
I know is a lots of stuff.