With the new Tinnitus debuff, any targets affected by drums are immune to the effects of all other drums for two minutes. While this sounds like a nerf, it might actually have a balancing effect.
In fact, other professions are seeing similar changes. Potions will create Potion Sickness, which will prevent the consumer from using more than one in any given encounter. Players will have to rest out of combat in order to refresh the privilege.
So far, this also is affecting mana gems and similar items, although it is unclear if that particular effect is a bug or not. What does this mean?
Encounters will have to be tuned assuming that players have limited access to buffs, self-heals and mana solutions. Mana regeneration will be of increased importance, and while you'll have to brush up on your mana management skills, Blizzard devs will also have to balance regeneration so that classes can last through raid encounters with only one mana potion.
It will also mean that raiding classes who have no use for leatherworking outside of providing drums for the raid, might be able to respec back to a profession that is personally useful and lucrative. I welcome the idea that raid members might bring unique benefits, rather than having a raid full of drummers.
What do you think about the change? Is your guild going to have to revamp its strategy, or have you worked around using drums anyway?