Can you add support for enderio metals. And prehaps some machines that use said metals. Like casings/combustion etc.

This is planned for the future, but not until some changes to the mod occur.
Other materials like botania and thaumcraft are also planned for the casing system!

I'm going to close this as it's already in Varying Machina and these changes will take effect on Sky Resources once it is moved to an addon for VM