> But I'm not too thrilled with expanding the UI with a whole lot of additional buttons,
> all to control something which may never even be needed (Constant distance with
> blend shape).

Sure, that makes a lot of sense. I mentioned it mostly because it wasn't clear if a more complex UI with a simpler mapping to how people might understand the problem would be a tradeoff in the right direction or not, here. I'll try to remember if I find myself wanting the more complex versions.

/Ella