Would you rather be able to adjust your rotation to suit the fight, or, having the fight force you to change the rotation and then you having to play a less optimal rotation for the rest of the fight?
I'm pretty sure most would rather be able to adjust their rotation to suit the fight. If I use Gnashing Fang slightly earlier, I can get it out before the boss jumps and still have it align with the buff window. Before the changes, Gnashing fang might have come off of cooldown and it just drifts with no way to adjust. I know which on I would prefer.
