Abbot:
Ice: The old fasion way?
Asteroids: When less than 4 go in it can be a challenge, when more than 4 go in and people get in the way there is a problem.
Goggles: 1 blue square. REALLY!? and that's easy?
Titan:
I don't run this raid basically because I don't know this raid. Seldom run and when it is people tend to zerg through it. How are people supposed to learn something they can't figure out.
Reaver:
At level this raid can be hard. I don't really think it needs to change so much as made epic.