A word to the Tanks out there.

[Ruminate]

That's a good point, but also not a good point.

I have played with DPS who can't tell which mob to focus if there is no mark. So instead of taking the mobs one by one, they get taken down at the same time(ish). If it takes 45 seconds to kill a group of mobs (fictitious number), it's best for the healer to have the first mob die after 15, the second die after 30 and the third day after 45, than having all 3 mobs die at around 38-45 seconds.

If the healer is at full MP at the end of the fight, does it matter?