Suggestion : give Tatars Feudal Age Cav Archers

(with reduced stats until Castle Age if necessary. But since they won't have access to Thumb Ring, it might not even be necessary)

That would be fun to see, very distinct from other civs and would allow an even smoother transition to Castle Age (with a huge powerspike due to free Thumb Ring). Skirms would still counter them and pikes would also threaten them. But they would be awesome for raiding.

If Tatars get a buff, I think this one would be very suitable.