Custom Shader Small Contract

Pending some information from Play Canvas, we’d like to offer a small contract for a custom version of the PBD shader.
We are looking for someone who can add support of a third UV Channel in the shader UI and support for Mixing 2 normals maps, the second one set to UV Channel 3, similar to how Unity handles Normal mixing.

We are asking Play Canvas if their Json supports multiple UV channels in a custom shader