I audibly gasped when I logged into the Paradox forums today and saw this. Suffice to say, I'm very excited for this to be released! The only thing I may have preferred was if it was set slightly later - say, around the height and fall of the Roman Empire - but I'm sure that there'll be a mod released soon after to extend the timeline to that time period, in a similar vein to When the World Stopped Making Sense for CK2. I also find it somewhat weird that they decided to include India but not China, as I'm pretty sure some interesting things were happening in China around this time as well (though I'm not as well versed in Chinese history). Again, though, there'll likely be mods adding in the rest of Eurasia once the game's released.