I think Blizzard thought it through, and that is exactly how AOO suppose to work by design, because it just can’t work any other way - get more players in WM to do this quest and hope that some of them stay. Plus WM will have more players on underrepresented side overall during the week, because different players play and do stuff at different times.
Unfortunately it’s a solution that tries to solve bigger issue with smaller effort, that’s why it is working for balancing numbers from time to time, but not improving the quality of actual experience of the game mode.
If you’re interested in discussing it more, here is the thread - Suggestion: Weekly Higher Quality Reward WM Activity Quest (don’t mind derails…)
You can also search this forum section for other suggestions and feedback.