The new 4.3 heroics are incredibly fun.

[EspyLacopa]

I did it again. Queued for a random and got ZA. Wiped 3 times on trash before even getting close to a boss. I left, and did some Arch for awhile then re-queued for a Hour of Twilight heroic. It went off without a hitch in about 30 minutes with just a mage dying due to standing in stuff.

Is there any way to queue for a random heroic and blacklist the trolls?

I must admit, to not having that much of an issue doing the two troll dungeons.

Where my PUGs get hung up at most of the time is the Foe Reaper in the Deadmines.