Irrational yet highly practical Shrinkage Captain
I bring the map down the local print shop and get the whole thing reduced to
A4 size (black and white cos its cheaper).
It must be really legible when shrunken down so much, I'll bet it doesn't strain the eye at all, and what's more the black and white monochrome will get rid of any confusion between all those complicated colours. Why has nobody else thought of this before. What a really good idea.
Spock