Current State of End-Game Contents - A Blog Post from A Japanese Player

[muwa]

So this is what he wants I guess

http://www.youtube.com/watch?v=7p_wjSMtAbw

Patchwerk is actually as scripted as FFXIV's bosses, you know exactly what will happen and when.
It was also an entry level boss for the instance (or wing) so having it as a gear check and less mechanics-based made sence.

You should look at more recent wow bosses if you want a more balanced view on randomness vs mechanics.