With the native tool, if you extrude a profile and the client wants a larger fillet, you delete it and start over. With PB2, you double-click the extrusion, pick a new profile from the library, and —the entire length updates instantly. Path too long? Drag the endpoint. The extrusion follows.
Paths can be edited at any time using the built-in path editor. DM Profile Builder 2 Plugin for Sketchup