Just wanted to post some of my observations regarding the Twilight Forge. I'm hoping that people will either read and criticize, or read and learn.
1. If you're not the ONE person assigned to the bottom pillars, stay away from them. There's no need for 2 people to be prepping them, as it's a one-person job. In general, I prefer this person to be able to heal themselves. A balance in the 30s, FoM/Warforged, and Deathward are all good ideas, but not vital. Don't use a 2-handed weapon to avoid dropping the pillar in a random direction (Thanks, AD)
2. Disintegrate is great way to drop the top pillarr, except it causes them to not register as being "dead". Use a ranged weapon for the coup de grace. The preferred method is to have the rangers use Improved Precise Shot to take 4 pillars down at a time, by targetting the last pillar and firing through all 4 at once.
3. Only run the bottom crystals for the first 2 hits. Go into sneak mode as you climb the steps (regardless of your skill in Hide/MS), and leave sneak mode as you come off the steps with the crystal in your pack. You need to have FoM or be a WF, and Deathward/self-healing. Stay the **** away from the Titan, please, and stay on the gunner's platform while the gun is charged.
4. The gunner needs to have a balance in the high 30s (prefer 40s), and I recommend staying in sneak mode (seems to prevent being thrown off the platform). Click on the Titan, and check where the circle under him appears when you are lining up the laser. Verbally confirm that you're ready every time the crystal is loaded, and check the charge after you move the crystal (and as often as you can).
I prefer to have the gunner run the first 2 crystals, since the gunner won't be doing anything at this point anyway.
5. Top runners could use Electric resist, and evasion/self healing sure helps. A balance in the 40s is a good idea, high 30s a minimum. Don't drop down to load the crystal, just walk to the edge of the catwalk and click on the sphere to load it. Stand at the junctions if your balance skill is lower, and line up with one of the rafters so you don't get thrown off (thanks, Aspenor)
6. If you aren't assigned to the bottom pillars, stay off of the ground floor if you don't want the Titan to move. I've been on the ladder, and I know it's tempting to hop off for a quick heal/potion/LOH/etc..., but if your balance isn't up to snuff you stand a good chance at flying down to the floor, having the Titan stomp after you, and waste one of the pillars. If you do fly off on accident, find the nearest ladder and grab on, or stay under the laser and take one for the team.
If you can make it to the top crystal room without falling down, you can stay there in safety until the Titan is destroyed, at which time the shield door will drop so you can get your chest.
If you die, someone will (likely) raise you... unless you are screwing up the raid. In that case, they'll probably move your stone to the far side just so you know the lack of a raise was deliberate.