i'm having trouble climbing it myself, have been for a while. I honestly don't like helping with lower levels because most people who start nyzul isle NEVER finish (as can be seen with the multiple statics i've joined over the years)
my opinion is lamps. Nyzul can be 3manned, but the thought of having to light 5 lamps with 3 people scares me. If there's any way to make sure the number of lamps are never more than the amount of people that enter the floor, i that would make nyzul isle easily 3mannable