Here is a UI flow diagram of the proposed Style and CSS dialogs. These are just my initial thoughts, and some questions that came to mind when figuring out the flow.
This is a UI flow diagram of the new proposed behaviour of Stroke to Path. This document also contains Use case testing steps and results. Please download this svg to view it properly in Inkscape. Any additional use cases, please email them to me and I'll add them in. Thanks. -C