In the latest version 1.7.2 currently on the asset store, the Bezier Path already has a downwards raycast guide line 🙂
[attachment file=”PathRaycastGuide.png”]
Please let me know if you don’t see them for any reason in your project, in case you are using latest version already.
The Bezier Path does not have your other request though about setting the position values in the inspector manually, which I have just added in the roadmap for the next version! 🙂