“Argos is an early-stages (but usable), free and open-source tool that could help you be ready. Built in openFrameworks, the C++-based cousin to Processing, the app lets you drag in basic widgets like buttons, sliders, toggles, and x-y pads, and assign them to OSC. That opens up control to various music and visual apps. (The OSC assignment tool does bear some similarity to that on the Lemur, though it’s simpler.) The openFrameworks roots should make this easier to port to multiple platforms”
This could be considered the root of all evil for major corporations, but as far as free-form design and operation– This is the direction I’ve got my fingers crossed for. No matter how complicated any of these seem to be, its worth looking in to. If for any reason, a basic understanding of its operation can inspire ideas in virtually every form of design, installation, technical or creative approach of which were never even fathomable.