why do people keep repeating that light cav is that terrible? sure, theyre less than optimal in skirmish and melee but in the pursuit phase they kick ass. especially when combined with a lot of horse archers.
To get to the pursuit phase you first need to win the battle. And you can't do it with LC unless you ridiculously outnumber them, so...that makes LC terrible for battles.
Maybe they can work as a separate army for mopping up those beaten, low-morale enemies, but for anything else, get another type of troop