Hi Marc,

> Also there could be some visual indicator suggesting
> there can be an interaction possible there, maybe points
> could appear at both ends of the blend...

Yup, that's what I was thinking - that would again be similar to how Loft works currently when lofting between 2 circles. Points are displayed at the seam locations where you can drag them to update them.

So that would make sense for Blend adjusting as well.

Still not sure about automatic trimming though.

- Michael