I stumbled on this realization when I was trying to get Stranger Things flashlights - for off-the-shelf items some of the prop houses have pre-designed DMX rigs they can rent out to productions - but if you ever wondered why the kids always have pretty hefty flashlights? Yup. As soon as I saw that revelation it made perfect sense why lightsabers (and anything emitting appreciable light) would need to be hefty.
We just upgraded half our stage's lighting to D-Fi DMX LED units at work. My wall-mounted broadcasting packs are about 6" x 8" and run off a 12v DC wall-wart. But the lighting units are all running off 110 with the wireless integrated into the main board - and even there the tech is somewhat iffy at times. With something that has to be reliable because lost minutes mean thousands in losses? I'd up the saber size too. ;-)
