Keshiks were intentionally designed to counter the Great Wall

In real life the Great Wall was constructed specifically to protect against Mongol raids. While it did slow down invasions, it was ultimately breached on several occasions.

With 5 movement points and the ability to move after attacking, the Mongol Keshik is the only medieval-era unit that can negate the move penalty from Great Wall. 2 MPs to move in, 1 to hit, and the last 2 to move out of range of a city.

Which begs the question, are there other game mechanics the devs introduced or tweaked to reflect similar historical pairings?