Upcoming Mythic+ Hotfixes - Reduced Importance of Mass Dispel

wowhead.com:

Blizzard is also nerfing Mythic+ on the weekly reset, reducing the importance of Mass Dispel in specific locations.

While this change is nice for the two locations if you don't have a Priest, if you do have a Priest you still take 0 damage!

• Bursting affix
• Chrono-Lord Deios's Time Sink in Uldaman
• Watcher Irideus's Power Overload in Halls of Infusion
• Gashtooth's Decayed Senses in Brackenhide

In addition, there are still multiple other locations where Mass Dispel is still super powerful and another reason of Mind Soothe is why Priests will still continue to be brought.

• M+ Dungeons
  
  Above keystone level 20, each additional keystone level will now increase enemy health and damage by 8% (was 10%).
• Developers’ notes: We’ve recently made and are currently making a number of adjustments to specs that were particularly powerful in Mythic+, and while we feel these changes will have the desired effect, we’ve also heard concerns that it may now be much more difficult to complete very high keys and achieve ratings that were previously within reach. We think this is a fair concern, so we’re making a temporary adjustment to the scaling of key levels above 20 in the hope that it provides players some space to continue competing for Mythic+ rating before the end of Season 2.

• Glacial Proto-Dragon's Deep Chill now damages affected players every 2 seconds (was every 1 seconds). This reduces the damage over time portion of the spell by 50%.

• Infinite Timereaver's Stolen Time cooldown increased to 8 seconds (was 4 seconds).
• Developers’ notes: We've heard feedback that certain dungeon creature abilities can feel oppressive for groups without access to Mass Dispel, and we're hoping these abilities will now