So currently, the maximum resolution of a CC computer is 51*19 pixels, which seems a bit restrictive to me. Adding a graphics mode than can increase the resolution of computers (and possibly other types too) would my bet on this problem. CraftOS-PC has a similar feature (if not the same) implemented already, and I believe many uses for this higher resolution can be found.

An alternative approach could be to add the monitor.setTextScale() method to normal computers too, and also make the lower bound go below 0.5.

You can change the size of computer screens in the server/world config.

Thanks for the hint, that was really useful!