The unit sizes should be gigantic due to the fact that Chinese Wars had a rediculous amount of people fighting in it compared to Western Wars. On the topic of realism, that is yet to be seen. I’m thinking it won’t entirely be on that side of things, as they are focusing on the RoTK aspect of the time period. The temptation to put in legendary warriors who can 1v300+ is probably to great. There probably won’t be magic per se, but the strength of these heroes will likely make it seem like it’s still there.