I feel that the premise of the thread is flawed from the start. We have people who enjoy both complex jobs+easy fights and easy jobs+complex fights, so the middle ground is likely to please the most people. There's no reason that we can't have moderate complexity in both the job kits and also the battle content.

A less-skilled player will always be able to survive and eventually thrive in a complex environment after enough experience. A hardcore player will never be able to thrive in a simplified environment, only tolerate it. Simplifying things hurts an entire portion of the playerbase and has a chance that they'll leave entirely because there's nothing left for them.