It would be nice if the model does not regenerate every time you make a change to a PVI using the Curve Properties window. This would be the same as how changes in the profile window do not update the model until you move the mouse back into the model or have the "Auto update model" box checked.
Changing the values for a PVI (grade in, grade out, station, elevation, K-value, etc.) can oftentimes involve some trial and error, so minimizing the delay after changing a value would be helpful.
