Although World of Warcraft and League of Legends stem from Warcraft, these two games grew to be giants in two separate genres—MMORPG and MOBA. If we disregard the fact they have a common predecessor, there really aren’t many similarities left between them. But no matter their differences, both are examples of prime design and maintenance and could benefit from exchanging a couple of key features to improve themselves.
The biggest weakness WoW has, especially in the competitive environment, is a lack of communication. Players are forced to hang out on Discord or their entire communication will be reduced simply to typing in party chat. But this communication isn’t as fast and as efficient and has a strong potential to end in a disaster. Another major problem you encounter in both WoW and League is toxicity as it goes hand in hand with competitiveness.