I think you're underselling the technology. The hologram appeared to be a small attachment to a multi-purpose droid that was recorded off of a single camera. Being able to record and project holograms on your phone would be extremely impressive even today, regardless of the fidelity. And the Palpatine hologram was likely monochromatic because it was being received in outer space.
The hologram standard for a dedicated device without transmission issues was much higher, seen in the holographic game board that C3P0 plays with Chewbacca on the Falcon. But in general Star Wars was smart enough to keep the technology basically gimmicky - the real targeting computers and useful stuff was 2-dimensional.
The hologram standard for a dedicated device without transmission issues was much higher, seen in the holographic game board that C3P0 plays with Chewbacca on the Falcon. But in general Star Wars was smart enough to keep the technology basically gimmicky - the real targeting computers and useful stuff was 2-dimensional.