Hi Bob - in the future I want to add a "Tapered extrusion" type function which I think is what you need for your draft angle stuff.

Another way to accomplish that kind of thing apart from chamfers is to offset your profile curve, and then move the offset upwards, and then loft between those 2 curves to produce a tapered object.

See here for an example:
http://moi3d.com/forum/index.php?webtag=MOI&msg=941.5

- Michael