I too would be interested in a smaller, lighter, high-quality 24-inch printer. I had to give up my big Epson when I moved. But I could easily accommodate a 35- or 40-inch wide unit if it was space-efficient and under 80 lbs.
I think something like the Epson T3170 CMYK printer could be developed in this direction. More inks would be needed, i imagine. On the other hand, with evolving print tech, some light inks and kicker inks could become less necessary as screening algorithms and print heads improve.