IMO it makes no sense the duty finder shoves two tanks into your party. There's no reason for that second tank to be there. It's always much better to bring an extra DD or an extra healer as there are no adds whatsoever in the battle for the off-tank to handle.

First, you have to get lucky enough that the random people in the duty finder are good enough.
Then, if they actually are, you have to beat the fight with one dead weight player.

Thus, making parties with the duty finder it's not really a viable option.

I'd love for this to be addressed.