A tool to easily visualize overhangs when designing 3Dprintable

Hi, this is my first message in here and i’m more than happy with nomad.
I did a non linear two parts mold with it but the most difficult part for me now is to make it easy to print.
It would be great to have a tool where you can for example select a normal as your orientation plane and then be able to see overhangs (in red) by choosing values from 30° to 70°.

Even if it’s not a core option (I understand its not needed for most modelers) it would be cool to have a trick to achieve this. (a custom mat maybe)