Suggest arrow and bolt take 0.5 slot. system increase the slots of Light crossbow and crossbow to 2. For fairness, system should reduce the slots of bolt and arrow. Then crossbow and long bow, etc player can carry an 1 slot weapon and 2 bags of arrow or bolts.
This would be a halfway decent option for infantry units because they are gaining more weight for more ammo. Although, this would make Horse Archers much more powerful delaying machines. They have no sacrifice but end up with more ammo. Yet, it would make all ranged use blunt weapons and make 0 slots less useful.
No thank you. Nice idea though.
EDIT: Actually. Now that I looked back over the bows. This would only affect Xbow cav, not so much Horse Archers. Since anything they can use on Horseback is already one slot.
Sorry, but still a "Eh" from me.