The notice of strange potions that were not potions traveled through the communication lines at extreme speed. The harpies were proving their superiority to other communication methods. The communication crystals couldn't send enough details and came at a high price. This alone was the major drawback to using them. These different groups would need so many that they would use too much mana activating them.
There was a great commitment of the harpies to become a properly represented race. Their desires were slowly but surely paying off as they met every group in the line. The groups of multiple races working together showed them and the others that they were not monsters. Harpies were a race that deserved a space like the goblins and the grey haired spiders that had fought to be more than what they were.