The bridge would solve the dilemma of Rhino users who want to use Plasticity. They have a lot of old developments, and Grasshopper also forces people to use Rhino. But the Rhino geometric kernel will never have functions for sane and fast solid modeling.
Plasticity is a convenient and fast solid-state modeler, but constantly importing and exporting is depressing. A two-way bridge between Rhino and Plasticity could solve this problem.