You can make a much wider gamut display (while still avoiding severe observer metamerism) if you have more primaries. You could even do proper multispectral ima

You can make a much wider gamut display (while still avoiding severe observer metamerism) if you have more primaries. You could even do proper multispectral imaging. It would be awesome if display manufacturers would try to make a display with e.g. 7 primaries in hexagonal pixels. Pretty well every image that currently shows up on smartphone screens already has to be resampled, so there shouldn’t be any inherent reason why you couldn’t have more sophisticated displays requiring slightly more signal processing to target. It would take a bunch of engineering effort, but nothing extraordinary or out of reach of current technology. The big problem is that every other stage of the image processing pipeline from cameras and GPUs to software is built on an existing square-grid-of-RGB-pixels model.