IF you do not change the Appereance Ratio of resources how can you play seriously at higher levels?
I mean: during the game usually most powerful ( economic/military ) nations are always nations with largest country.
---------This is the only rule that lead CIV: more land you have more powerful you are.-----------
Assuming this gold rule,most powerful nations hava greater chance than smaller ones to " spot " resources.
Moreover AI is used to cheats about that.
If a powerful nation find resources that smaller ones couldn't find it's obvious that they lead the game until the end in an easy way.
Most powerful civ became stronger and stronger,most weak became weeker and weeker .
So the fact to double AR of resources is the only way to avoid this destiny.
IMHO
Gunter