Im a mongol artist who is really interested in medieval warfare. And i study lot of my own cultrue. So here is my few cents on this.

For the heavy infantry the full neck armor and wrist armor is missing. For the foot archer, His left arm must have it's sleeve tied, becus it tends to get in the way of arrow. Their coats dont split in the middle. The mongol coat is not usually this long, it is long up until little below the knee for easy mobility and faster mount. The leader should also have Wrist armor. Other than that, It truly rocks. Their helmets and overall are truly faithful.

If you would like to see more references i can recommend you some. Please leave a note.