Originally Posted by
KaPe
The simplest answer is to get a sixth healer. There's really no dps race here and if you really have people dying to roots, it gives you an additional dispel to handle it faster. You get another healer in case your portal one dies. You can dispel more Shadow Bursts (or sleep). You have more raid cooldowns. It makes it so much easier to handle all the damage, which in turns makes for a more controlled fight. Yes, it will be slightly longer, but not by much - especially if you're still dying a lot.