i had a thought on how to improve beastmen i recently played a campgin as middlehiem i belive and was able to defeat 6 full stacks of beastmen hordes using night attack with only 2 units of cav charging into the rear it is almost insta rout.so my suggestion would be to make beastmen units scare horses to help them hold on a bit longer make them more of a challenge is i dotn know if this would make them too unbalnced though.