Lately, I've noticed a few maps where the large version is only about 10% larger than the small... Now I have nothing against those maps or their makers, but I think it's kind of ridiculous to have such a small difference.
I know the absolute minimum size difference is only 9%, but if I recall correctly, the 9% minimum was decided only to stay consistent with the existing maps at that point...
Personally, I feel that it's pointless to have a map in 2 sizes if the sizes are so close to each other that they're practically the same. I think at least a 20% minimum should be required (from small -> large), so that the small map would be no larger than 83,3..% of the large. I don't want any current map or currently in development map to be forced to change their proportions, but I think it'd be fair to require of all future maps.
What do others think?