Bezier Curve Extrusion

This has been a long time without attention, I would love to see nicer extrusions on curve objects, particularily with sharp corners. Here you can see the current narrowing of extrusion on a 3D or flat curve at the corners. While the overlaps maybe unavoidable the width should be consistent. Furthermore, 2D curve will always extrude perpendicular and not offer this ability.

A 2D beveled curve will provide better interpolation with consitent width, howver this is not flat but diamond profiled.

The same beveled curve as a 3D type reverts to the problems with extrusion.