I would love to see the deviation-comb to show the tangent direction error-direction.
above demo ranges from -12.7 to +12.7 and i would love to see a comb that points inward / outward depending on +/-
If I understood you correctly this is already possible in Cyberstrak using the CSTransition command - please have a look to the attached video.
The option “Normalize” brings the comb to one side, switching it off shows the direction. Sky brought this idea to my attention a while ago. Btw the command shows the difference angle between the Normals.
At the end you’ll see also the effect of the “Dynamic Handle Update” mode that you can activate/deactivate with the dock bar.