Hi Danny, also in MoI the distance between the endpoints being blended is part of the calculation.

I'm not sure if that distance is what you're referring to as a "depth" ?

But if it is, that does not tend to be a good thing to have to set manually especially on surface blending where the edges being blended may be varying in distance between one another. It's good for the blend to automatically take this base distance into account so that it doesn't make things like a bunch of "extra material" showing up in the blend in areas where the edges happen to come closer to one another.

- Michael