Liquify — is it possible to convert a grayscale image to a mesh? or a mask?

[shields.up]

Just finally getting into some of Photo's features now that I've discovered the live features remain live when re-opened back in Designer — love this, as I'm working on a project where I want to have multiple color variations of a conical gradient, but have them all distorted in the same way. 

However, to take it to the next level, it'd be incredible if I could import a grayscale image to define the mesh for liquify, or even to create the mask before using brushes — I'm trying to do some very fine details if I can. I know that one way to fudge this would be to rasterize and then load selections, but then those rasterized images wouldn't be editable as gradients back in Designer. 

Am I missing a trick here? If not, I'll probably make this a feature request post in the appropriate forum. Thanks!

[firstdefence]

It looks like it will have to be a feature request, you can only load exported/saved meshes.