Landform classification away from traced coast?

[wilfchun]

@davefavismortlock
I notice that the cliff points are assigned following the assign landform routine, which iterates along the traced coastline.
Are these landforms limited to being classified along the traced coastline, or could they be placed along another line?

Could it potentially work, for example, if we traced the (newly added) cliff toe line and assigned the cliff points there?
This way they wouldn't move with the tides or SWL.

This is also something that comes to mind looking to the future of a gravel barrier implementation?
In this case we will want to define the location which would again not move with tides and SWL.