everything i can think of has been pretty much stated already. this map has jaw dropping graphics and just looks perfect already. my main issues are the borders cutting through the islands in the artic, some one them you can resolve with an army number i bet but some of them not so much.
also id like to add while the bonuses do need a little tweaking like people have said, the current set up makes the map rather realistic since there will be a lot more action in the south than in the north and thats how it was 500 years ago
but seeing as this is CC id probably prefer a map that plays well and is decently accurate over a map that plays horribly and is perfectly accurate