I think that after empyera is over with and arc 3 is over with there should be a world like wizard city but the complete Opposite. Merle gets brainwashed by an evil force. And we have to find out by who and why but towards the end we have to fight Merle. Since he’s brainwashed every wizard is “considered” an enemy. After everything he’s done for us and helped us we go through all the memories that he’s had with us and he falls to his knees saying “ my dear wizard I’m so sorry for failing you, we conquered the worlds together and I let you down.... please forgive me dear wizard for that I owe you my life” and it’ll be a really sad phenomenon.