Focus added gameplay to a boring class.
As other said, we were in a spot where mana was a nearly unlimited ressource, we could pot, judge wisdom etc...
There is a reason why we could macro our entire rotation, and topping dps while using a macro and a turbo function gamepad, that reason was our ressource system was inexistant.
So yeah, it's not cool to pump for focus, but at least you have to think a little bit.