How do I set User Channels to be on by default?

Hi,

Im looking for a way to set my texture set settings to always have 6 of the User Channels on by default, to remove a few of the standard ones and preferably have the user channels automatically renamed.

Is there a way to do this? I've looked into making a custom shader but I can't see a way of writing this in GLSL.

Any help is hugely appreciated. Thank you.