Why would I need the GWB?#
The idea behind the GWB is to make it easy to make parameterized complex and reproducible initial conditions for geodynamic models. A more extensive list of what the GWB is designed to do can be found in sections What is the GWB? and GWB philosophy.
In short, if you want to easily build more complex geodynamic models then a few if and else statements can provide, either for modeling or visualizing, the GWB may be for you.