If it’s not already being worked on, I’d like to suggest having joint components like Unity’s. The current FortPhysics component appears to only constrain rotation & movement to the world and it either locks the actor in place or doesn’t.
Unity’s Configurable Joint component (linked earlier) offers fine control over how an object is constrained (like how a door may only open forward and stop at 90d) and allows rigid bodies to be linked to each other (think of a chain or segments of a rope).