Symmetrical Contoured Blend

[gwpriester]

When you create a blend in Xara the left and right side of the blend is in a straight line.

You can blend along a path which adds an asymmetrical shape to the blend.

I would really like the ability to create a symmetrical blend. If in my example the two blends could be combined into one mirrored blend shape.

Maybe this could be accomplished with envelopes or maybe the user could create the shape and blend to it.

And example of what this might look like, imagine a wine bottle. Starting out tapered at the top then getting wider at the bottom.