Being able to connect an NPC to a specific ID would help in terms of server development.?
Let's say my server has 100 player slots and I would like another 100 npc's, I would rather have them connected in slots 100-199 than being mixed in with regular players.
By having NPC's in higher slots, I can reduce Player Information array sizes to the appropriate size to only include players, meanwhile I could create NPC specific arrays that handle NPC-Specific?information.