Just an idea I had while brainstorming on a future project.
Please excuse the sales pitch, but I want to explain the reasoning...


In the BEGINNING... we were given ent_create, and we felt it good.
Later ... came ent_morph, and memory became more managable and flexible.

NOW ... we have ben granted ent_createTERRAIN, and our world is more managable.
So now... I feel ... we need ... we want ... I want ... ent_morphterrain!

The ability to take an existing terrain entity and change its size.
That is either its cell 'size', or its overall width or length(in cells).
Much like the "Change Terrain Vertices" funcion in MED, except in-game...

[EDIT]Another bonus would be if it could allow you to re-locate an existing
terrain to a new XYZ co-ordinate, without needing to remove and re-create...