It’s been a subject of some discussion for the past few weeks and the original word came down when Blizzcon came out.
During the Q&A portion of the most recent BlizzCon’s Raid & Dungeon panel Scott Mercer, Lead Encounter Designer said:
“I know that UI mods are a huge part of raiding, and it’s something that, [...]

There have been some really nasty fights on the forums lately when it comes down to the topic of mods and addons and their place in raids. Specifically where Blizzard reps are saying that sometimes you don’t need tons of mods (I agree with them) to beat an encounter. Frankly the only addons I use [...]

Basically are mods a good or a bad thing? I can’t imagine them being destructive to gameplay, then again I use maybe 3-4 mods at most. Scrolling combat text, Bagon, Cooling, and Omen is pretty much all I ever bother using at any given time. I have Atlas loot installed and up simply for those [...]

Having a Blizzard built in threat meter would be hands down one of the best additions to the default UI ever. Right now Omen and KTM are great (Omen being better by my personal experience) but they don’t really rely 100% on precise data and can be misleading or inaccurate.
If Blizzard were to add in [...]