It was just an idea. I saw some potential on that because it is very intuitive, it works like objects in real world, as you said, like collisions. Now, for the points it could be very helpful to have something like you described before, an align to curve... it may be a project to closest point on curve, but again, just an idea that came to my mind when using MoI, nothing that cannot be done right now but with more steps... Thanks for your replies.