This is an old request that I have been asking years ago and now I remind you again about that, because it’s really annoying to be forced to set a new custom CPlane before using the
! _Line _Tangent _Pause command on arcs or circles that are not perfectly horizontal or vertical relative to the XY plane, or perpendicular to an orthographic view (front, back, left, right, top, bottom).
It should automatically adjust to the same plane as the arc/circle it uses as a starting point, which means that it must no longer require to build a new custom CPlane to make the tool work properly. Working with this tool in a Perspective view is nearly impossible unless a new CPlane is set to the arc or circle prior that.
The following video is a good example of how annoying is to be forced to spend time to set a new Cplane for each of the new tangent lines.