Best designed DPS and Worst designed.

[Shurrikhan]

MCH, by comparison, is literally so well-designed that it plays itself

I died a little. I get what you meant, but still.

On most other points, agreed; I just don't think the distinction between "unfun" and "well designed" is quite as clear as you imply. Even if the job works with wonderful smoothness, if it's deeply fun to very few (or, in no setting beyond, say, PotD), that's still relatively poor design.