The World of Warcraft forums have a new post to inform players about a forthcoming change in Mythic+ dungeons. These changes will be implemented on the PTR prior to releasing the 7.2.5 patch on to live servers.
There are two main changes:
- keys for Mythic+ dungeons will no longer deplete. If the run is finished within the allotted time, a new key will be granted for a random dungeon 1-3 levels higher. If the dungeon isn't finished in the required time, a new key will be issued for a random dungeon one level lower. If it's not finished at all, the key will be for the same dungeon but one level lower.
- there will be only a single chest rewarded at the end of a dungeon regardless of how quickly it was defeated. Finishing a Mythic+ dungeon will have a single chest with two items and AP inside. If beaten within the time limit, a third item will be inside. Keystones will continue to upgrade
Devs explained:
Currently, when you complete a run that upgrades your Keystone by 2 or 3 levels, you’re also given a 2nd or 3rd chest. However, because of this, players tend to look for lower-level Keystones that they can easily stomp through, instead of higher-level Keystones that are appropriately challenging for their gear and skill. That, in turn, affects who they’re willing to invite. AOE damage output is preferred over everything else, because the only concern is how quickly you can clear through easy trash packs. And gear requirements tend to outpace what actually drops: if you could find upgrades in a Mythic 6, you’ll have a hard time finding a group, because the Mythic 6 groups are full of players who are capable of clearing 10+ and are just looking for an easy 3-chest.
You can read the full post and the community reaction by visiting the World of Warcraft forum.