Doing away with wires entirely is an attractive thought. I would love to see solar/wind technology evolve to that point.
As a counterpoint, while we are being seduced by our iphones and other technology, let's not forget that we are artists and our primary goal is to touch the hearts of those we serve - not to impress them with gadgets and wizardry.
We don't find new kinds of rocks in Japanese Gardens. We don't see that paints have changed much throughout the centuries. While lv landscape lighting is relatively new, the art of lighting design is very old. Sometimes a firefly lantern is the perfect luminaire.