Surprisingly, The outdated MMO is WOW, not FFXI/XIV1.2

[KaivaC]

I can tell you: So you can get familiar with the skills and then know your rotation by the end of it. The idea behind it is the infamous "difficulty curve" argument - Gradual increase of rotational difficulty.

The results... vary. Mildly put.

Let's be honest, a huge chunk of the playerbase don't even use half of the necessary skills NOW, months into the expansion. There's been an influx of Medica II spamming WHM lately. RDMs hardcasting everything. SMNs thinking they can just stand by and chill while their pet does all the work. Tanks that don't put on a stance (in Sigmascape no less...yea, that was fun).