I assume the dungeon in question was Aurum Vale? That one is indeed a bitch on the time limit in a party full of newbies. I still think the 90 min timer is good. It makes wipes matter. I remember in WoW I could solo alot of instances because there were no timer. I could take down mob groups 1 at a time and it did not matter that it took 4-5 hours because there were no timer. It was even possible turtling down some bosses.