We have many large terrains that we dont wish to display ON because our design surface is mainly below it and it makes it more difficult to navigate the model.
For the cross section views we need to turn the display of this ON to be able to see it in the view. Addition of a toggle in section options to "Display Terrain Surfaces" would make much more sense and remove the need to adjust the model view display to get what we need in the section view.
Also, the ability to toggle individual Terrains like what is present for multiple Profiles in the Profile view would be very useful and needed for normal major project datasets.