Waiting in queue for 30+ minutes to finally get a group, then the tank makes a reckless pull without waiting for the healer.
The tank then ragequits, and I'm stuck waiting in a queue again for no fault of my own, while the tank gets to instant queue again.
I think that anyone leaving a group within the first 5 minutes with all players present should not be able to queue for any game mode, including pre-made, for 15 minutes. Everyone's time is valuable, not just the tank's.
I understand that not every group will click, that people will push beyond their skill/gear and this is an EA game and things like DCs and crashes will happen. Allow groups to requeue if they lose a player within a few minutes. Allow groups to vote-kick players that are trolling, or aren't pulling their weight, then re-queue. I know this isn't ideal for timed dungeons, but some players aren't even able to complete dungeons, let alone time them.
Allow players to queue for a few specific dungeons. This will stop the endless cycle of people leaving queue immediately when the dungeon they want to run not popping. The vote system is great, but it's clearly not working well, and without punishments for quitters people are abusing the system. Long-time MMO players are starting to get fed up. Something needs to change.
While I don't have access to the Enternal queue, from what I've heard from friends that are, at first glance this system seems superior.
(Second pic is a group where tank DC'd on loading, not a name-and-shame.)