> The other method being requested is kind of a drafting efficiency
> kind of thing for making it a bit more streamlined to trim a lot of
> curves, at the cost of having a more specialized additional
> command that you would need to trigger to do it.

How it works in VectorWorks. The knife tool (2D & 3D) has three options: Split By Point, touch a line/spline; Split By Line, drag a line; and Trim By Line, drag a line and an arrowhead appears on the side the knife is being held but pointing away from the cut, indicating that side to be retained.

Split By Line and Trim By Line are most useful in my work.

Leonard