People have been asking for a second quiver since release. There was an empty slot available. They already had a completely sufficient melee weapon. The glaive is superior to the mace in almost every situation -- the only time it won't be is during a castle siege, standing in a doorway or on one of the stairs in such a direction that they can't perform an overhand. Even in a melee press, the mace isn't doing so hot since the AI can't aim a short weapon effectively.
I guess it could be worse: someone could've put a shield in that spare slot instead.
Also: similar applies to the Sturgian Horse Raider, except even worse. They lost a second set of javelins for a lance that they won't be able to use effectively against anyone with credible ranged troops facing them. Arrows already take a steady tithe of Horse Raiders, even with their circling. Approaching directly means much more accuracy on the part of people loosing/throwing at them so they either need more armor or just to get their second set of javelins restored.
I guess it could be worse: someone could've put a shield in that spare slot instead.
Also: similar applies to the Sturgian Horse Raider, except even worse. They lost a second set of javelins for a lance that they won't be able to use effectively against anyone with credible ranged troops facing them. Arrows already take a steady tithe of Horse Raiders, even with their circling. Approaching directly means much more accuracy on the part of people loosing/throwing at them so they either need more armor or just to get their second set of javelins restored.