What is your definition of midcore? Examples of midcore content would help understand what you're asking for.

The devs have stated in the past that the majority of the player base are performing below their standard. Hence the nerfs and simplification of jobs and some content. The difference in performance back in HW days was very huge and the devs didn't like it. The nerfs were intended to bring the bottom players closer to the top.

The devs have access to all statistics. Success/fail rates, the number of attempts of all duties, how long players remain subscribed, the number of active players, etc... I'm guessing they are happy with the ratings they are getting.