Lock out is to heavy handed

[Teryaani]

If players were filtered into dungeons randomly when they queue for a random dungeon, there would never have been this situation with tanks and healers fishing for in-progress runs, and this would have never been discussed, at all. I will never agree that a penalty in lieu of correcting a design flaw is the way to go. Only time will tell if SE's gamble pays off or not. So far, it seems to be yet another polarizing issue as evidenced by the fact there are a few threads going on about it.

The random distribution won't fix the issue. A player that has no interest in a dungeon or that dungeon at that stage is going to drop, eat the penalty, and do something else for a half hour having wasted everyone's time in the progress.

If anything you'll have more players with 30 minute lockouts.