There's several underrated units in the game, but one in particular I want to focus on right now are lancers. I've done a lot of work to give them a unique role completely unlike anything in vanilla. Lancers can get up to +100% defense, heal after moving, or 5 from promotions, depending on what you want to use them for. Their cost was also dramatically reduced to the same as Knights. This makes them cheap to move in and improve flanking bonuses, or block counterattacks using their zone of control. Lancers can also double their sight range, and can get the Medic promotion to further help support other units. In addition to all this they have a +25% innate attack bonus now too, and their defense penalty was reduced from -50% to -25%. If you're a conqueror, try adding 2 lancers to your army for a wide variety of roles: Scouting out threats to the army. Finishing off wounded enemies. Cannon fodder. Improving flanking bonuses for main-army units. Providing Medic healing.