While I agree with this in principle, it will just lead to people refusing to help in the key until they get kicked.
A better answer is that if someone leaves, the key is reset at it’s current level, and a replacement is allowed.
Replacements happen all the time in raids, why not in keys.
Most likely not, i have tried a few sevens and depleted them all, and i consider myself to be on the average+ side.
No it just might deter losers from leaving keys that aren’t guaranteed sucess
This is something I’ve suggested a few times and gets shot down becuase “it’s your key you must risk something. It’s your fault if the group goes wrong
I think we just have a difference of opinion here and that’s fine.
If it happens we will see. I think it will be worse for pugs but great for groups.
It is also bad for groups. It is fun for 1 week with unlimited tries and then you are burned out (been there done that on the tournament realm). A charge-system for keys would be more desireable.
I can see that side of it too. It’s bad enough that my group tend to get the same keys over and over but to just spend an age in one key is going to be a nightmare 
Maybe if there was a system that if you disband before the end it lowers, but if u finish the run you get a key at same level. Less room for abuse. I do think the depletion serves a purpose though with saying you were not ready for this keylevel just yet.
The NPC to lower key levels makes this purpose moot, as players have a choice to try again or lower it, without depletion.
Perhaps a dialog giving the player the choice to “try the key again” or “lower it a level” at the end would work better?
Could even use the same NPC that changes keys at the end of the dungeon for this.
Its not about that. Whoever sais because “you must risk something” its BS.
You people have to see M+ from a bigger picture. Not just from your personal PoV.
The bigger picture is that if depleates did not exist, we would all be camping on our keys for months.
Today, if you fail a 9, you get an 8 back. So you have to play an 8 all over again, giving a chance for those that need that RIO, or play at that level. With out depletes you would be sitting on your 9 with our friend Jimmy here with noone to play his 8.
You multiply this by millions of people, and M+ would turn into M+7 and M+9. Nothing else.
The key here is to make the process of upgrading from 8 to 9 less of a pain to do. But not get rid of depletes.
what i´d also like to see is you do not deplete the key if you finish it. It adds incentive to stick it out and logically if you manage to finish a key in any level you only need to work on your execution, but you have the tools to succeed at the level already.
Depletion for abandoning a key is fine, albeit i´m not against adding charges.
Plus the argument makes no sense. It takes a team. I did DB and during the first boss I didn’t have anything up for the tank buster then I immediately stood in the laser. 
Of course it’s simply that one of the DPS in the key “wasn’t ready” and it was “above their level” and was “their own fault” for playing with me.
Simply add the option to lower the key level or keep it the same, to the NPC that changes keys at the end of a dungeon, with the default choice being to lower it, such that abandoned keys are lowered, untimed are not.
Beat the boss, not a timer. Just like dungeons have been until they started experimenting with trying to make esports out of WoW gameplay
i think it is good M+ isn’t raiding. We also do not want to wait before every pull of a trashmob for every cooldown to come back. One of the skills is managing your (group) cooldowns.
I Fully agree at 100%
If you already timed all dungeons in +9
Your key cant deplete under 9 or manually with npc
That’s fair but surely there is a solution that just punished the ones responsible without shafting the leader. Which is the current system atm. Leaver go unpunished leaders get punished
They should make keys have 2 charges on deplete.
I guess we can agree to disagree on that one.
At least they made delves now
Then perhaps everyone should have their keys at risk and not just the leader. That will probably create other unforeseen problems but at least everyone will care equally.