This one seems the best in my opinion. Beyond those borders (even within them in some places) the game engine couldn't modle what was going on properly anyway. The Himalayas is a good point in the east to stop, as thre dosn't seem to have been much going on between there and China during this time anyway (I am probably wrong). Also, the interesting world of Greco-India and so can be replicated nicley, as well as providing a counter balance for the Selucids.
Well for areas that the game cannot model, there is Terra Incognita!
But I happen to agree with the thought that the slightly tilted map is the best option, I just wanted to present as many different options as possible so everyone could get a good look!
Ideally, I want to cut the map off before China, otherwise we'd have to include the Chinese, and as much as some of us would love to have the Warring States included in the game, it would be far too much to model and would be far too far away from Rome to have much of an impact in the game.
The main point is to allow any mod that wishes to recreate eras such as the Achaemenid Empire, the Macedonian Empire of Alexander, and even the Roman Empire under Trajan.
Heck, with the last few maps, it's possible to even recreate the Mauryan Empire.
I'd like to have the far east be a giant cesspool of barbarian hordes, since I also hope that with a map of this scale I will be able to fill Gaul, Germany, and Britain with tribes.