Sabre infantry, Axe band, Jian swordguard, and faction-specific infantry such as Yuan Shu should be buffed.
They are useless compared to spear infantry.
Spear infantry has shield and fight well as anvil than sword infantry. Also, sword infantry isn't stronger than spear infantry that much.
I think melee infantry makes stronger than now.
They should kill other spear and range units much faster.