It is simple to insert a GDL object INTO the wall element or column to simulate flaring and other organic irregularities.
RULED is your command.
Draw a bulbous shape, copy it, shrink it, rotate it a little.
In the GDL script, (use the reference manual for… reference)
you can easily establish parametrics for the height and scaling of the transmogrification.
The attached image shows three parametric variations on the same script.
Dwight Atkinson