I never thought about it like that. But you're absolutely right most people are socketed, with the BIS raid items in the appropriate slots.
Fortunately for Havoc, most of the new BIS is actually also BIS slotted in the new respective slots thanks to legendary stat priority. This would not be the same for every spec/class, so you're right.
Either way it was nice to get some fresh mechanics and gameplay/builds for once and not be locked into 1 style of gameplay. DH finally got their "borrowed power" artifact/corruption style design back and before 9.1 has even hit so I'm happy.