All content in the game has only ever lasted 5-20 minutes per attempt.

This is because the game is a pick-and-mix:


That is how it's designed, always was designed and probably always will be. And that is why everything will always last 5-20 minutes:



That is a job listing from 2022. That is my point. It's not copium, and I'm not saying there can't be more content, I'm just saying some people have a fundamental misunderstanding of the game. It could last longer than 20mins, but they intentionally ask their designers to restrict it to this timeframe.