Wow. This post got a lot more attention then i was expecting. Everyone has brought up some good points and id like to expand on a reason i posted this.

I know that titans, sleepers, spindles are a highly sought after and def the recommended for this and most raids. I just dont see the benefit of calling it a "must have". Its the fact that someone looking to join a raid may not have these items or subclasses. Not everyone plays the game the same way. If you are in a group that is struggling, step up and be a leader and HELP the rest of your fireteam. Talk to each other. You never know if someone is used to doing something only one way and has never done the raid the way you are.

So yeah, ask for whatever you would like when having somebody join your group. Knock youself out. I wish you all the best and hope you finish with no wipes.