Dynamis - Mad

[Yinnyth]

And this is where you're wrong. There's a reason beyond being a dick why holding multiple mobs is bad, because it's inefficient.
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Unless you have a means of damaging two or more mobs at the same time at the same rate you'd do it to a single mob (like if you're a WAR FCing, for whatever reason), there is absolutely no reason whatsoever to hold mobs and if you're doing it you deserve whatever it is people have in store for you.

I'm sorry, but you're incorrect about this. Killspeed is not the only limiting factor. Under your reasoning, a brd+dd duo would be best served by having the brd pull one mob, help kill the mob until it's completely dead, and then move to pull again, but this simply is not the case. The BRD's time is better spent looking for the next "good" pull. The reason for this is because any time that the DD spends waiting for a pull is lost potential, so the BRD is best served by maintaining a constant flow of enemies for the DD so they never stop swinging.

The same thing goes for BST. The BST himself is the puller and the proccer, the pet is the DD. Any time the pet spends without a target to fight is wasted potential. Any time the pet spends waiting for a proc before finishing a mob off is wasted potential. This goes even further when you take into consideration the types of mob that BST fights (if you assume beastmen type mob). THFs, for example, waste 30 seconds of your time if you fail to proc them before they hit 50% HP. If both the BST and the pet are fighting this mob at the same time, your chances of bringing it to 50% HP before proccing double (assuming the bst and pet are evenly matched for damage).

So no, BST's efficiency is maximized by making sure the pet always has a procced mob to fight, and looking for the next target. And even if you assume the BST is limiting his own efficiency by being stupid, being a jerk doesn't solve stupid.