What if you draw a line from the spiro path point to the same relative point on the b-spline path then defualt to the middle of the line but offer the right to set how much closer the position is to one curve or the other dropping to the new position half way through the curve as you go Point to Point. The reason I'm thinking this is that neither tool to me looks that natural I was wondering if such a curve tool could look more natural.

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