Yes I agree - not being able to play the earth map is a little let down but the outstanding art and really great design of RI totally make up for it !
Go to this site.
http://www.realism-invictus.com/forum/
Look in Ideas/Development/new 100x56 World Map.
By aod.
I have developed a new, smaller, earth map with 100x56 tiles, its RI 3.25 compatible, with scrubs, swamps and all.
It doesnt has the minors civs, but its playable with 27 civs. Its not multiplayer-balanced like earth evolution, but every civ has a shot at winning, some with different strategies.
This map is geographically acurate, except for an enlarged europe. Europe is like 50% larger, so all european civs (France, Poland, Germany, Spain, Rome, Greece, Vikings, England, Russia) have a better playfield.
Its faster than the Large RI map, although not as fast as I hoped. I also set it to LEGENDARY (0.5x) speed, but I may change it depending on your input.
You even get Poland.