Balance, Homogenisation and Encounter Design: The Problem.

[linay]

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Instead, they shouldve reworked the classes so they have unique skill identities. They end up having the same dps output overall (which is a matter of tweaking numbers) and same overall survivability, but different aspects of how thats achieved.

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Lastly, it also means that some classes will be harder to play. This should be ok as long as its not so ridiculously more difficult to be functional compared to other classes.

I think that would be the potential issue. If a more complex job outputs the same DPS as a simpler job (and this might be subjective as different people work differently and may find different things to be complex, though some things can be universal as well), either people would see no point in taking the more complex job as it would mean higher chance of failure with no extra benefit or it would feel unrewarding to play unless the player is looking for that exact complexity in gameplay.