So we got down the first boss pretty easy.   Basically same strat that we used in 25 man with just less peeps.  Went down good and quick.  Just send 2 deeps up to the top of the boss to slow him down.  

Make sure your siege engines use their lightning to stop the flame vent when he starts channeling it.

When you're on your way to Ignigus or whatever you kinda want to tank the two molten giants around the corner.

Tanks stand so that the mobs are out of LOS from the rest of the group, but the ranged can hit them and jump back behind the corner.  Healers should be able to see the tanks at all times but not be hit by the earthquake that the Molten Giant thingys do.

The elemental looking guys are kinda rough cause they send out a flame cyclone thing that does a knockback and damage to the player.  There's 2 mobs at one time so you can get ping-ponged between the two of them.  We had a rough time with them.

On Razorscale we tried splitting the raid up into two groups, one at each side.  It helped us focus healing on certain people and let the dps focus on whatever tank they were on.

Good luck this weekend guys.  Let us know if you find anything we missed.