The problem with the world quest is that getting the 0.5% participation usually requires several hours of playing in one go. The effort required by itself is fine because the reward is nice as well, but it should be possible to split the effort into smaller chunks. I'm sure it's difficult for many players to find that much time to play at once, making the quest impossible to do for many players. I propose implementing one of the following solutions:
1. Add mysterious ticket as a reward for some event quests (e.g. halloween, christmas). Occasionally, not for every event. E.g. possibility to get one ticket per year this way. I'm not sure if it's done already to some extent.
2. Allow players to obtain mysterious ticket fragments when they participate in world quest less than 0.5%. E.g. one fragment per 0.1% participation, and 6 fragments could be traded for a mysterious ticket, to still keep doing the quest in one go the most efficient method. Actually noticed that mysterious shards are somewhat similar to this suggestion. However, they still require 0.5% participation.
3. Similar to previous one. Keep some portion of the previous participation when participating new world quest and previously had less than 0.5% participation. E.g. if you participate 0.1% in one world quest, then you would already have e.g. 0.05% participation when the next world quest begins.