Few things.

1. Less party wipe mechanics. It is bored. I have 36000 HP for nothing. Someone fail chain? YOu're dead. Someone Fail Puddles? your dead, Someone Fail X thing, even if you don't fail, you're dead anyway. I knwo the team work is important, but is becoming annoying. Sophia is a good example. Even if people die, you still can complete it if resurrect them. People who is doing the mechanics correctly shouln't be punished.

2. Make both tanks and both healers necesary to avoid Solo-tank /Solo-heal situations on PF, but this in general, not only for Omega.

3. More variety. I liked a lot the Alexander. But it is always machines and goblins. More variety of enemies could be cool.

With that I'm happy.