Realizing that you guys have your own Arduino shield for development, is it possible for power users to integrate things like this ZM3102 module into their builds for size/versatility?
sure, why not.
If you’re looking to build a product then for sure. If you’re looking at it from a hobbyist then I don’t think Z-Wave would be the right approach. Lots of NDA’s and licenses to sign.
I’m ok with signing an NDA if it means building more integrated devices.