He has a Rogue in his first group, it's number 4.
Are Shaman a substantial DPS increase? I currently run in T5:
UWIII Warrior
Pally
Zerker
Rogue
Monk
Cleric
I'm thinking of what to replace the Cleric with for the time being as healing isn't much issue right now. I was thinking of trying out a Necro since I've always been a fan of the class and my AoE damage is lacking but I also have a shaman I could bring up. Looking to optimize my best with 1 group for now until I finish up T5 and feel more willing to run around with additional characters.
Acute,
I have gone through T5 3 times now, 1 with my original 12, then I added 6 more and I am just finishing up another group of 6. I am done in there just need some gear to move on.
Before finishing this last t5 run, I basically got my group of 18 through T9, War max UW SoA (no ear yet).
Let me tell you that this last run is as painful or maybe even more so, than the the 1st 2 times. Its far easier, I can pull the entire zone, one shot corals etc but it is still a huge time sink and boring after the first time.
This leads me to my second point, figure out how many toons you can load at one time. if that number is 10, then figure out what 10 toons you would like to have and then get them to T5. You can do it a few toons at a time but when you get to T5, load them all up and get them the gear and kill credit.
If you do this, you can pair down to a group you like or mix and match the toons to find what works for you. And as you have time or get bored, you can bring a different toon up to your current level quickly as they have already passed T5. You will also notice as you move past T5 that you want to pull more and more toons. You will look for ways to have your tank accept more damage from those additional mobs and for ways to quickly mow them down for farming and progress.
To do this you would max your SoA, use drake and regen from druid and the melee mit buff from cleric. Then you will start to want to add more AoE toons until you find a balance between single target DPS and AE. These are typically your War with UW, Rogue with UW, a monk and then a few zerkers, and a Paly in each group to keep them alive.
For those trying to min max their group or trade out one for another, I will say this, just add another dps toon, its added dps will be greater than the dps found by mixing your group makeup. Even on a crappy computer with the info on these forums you should be able to box 10+.