I got back on my lock team, reshuffled the other 2 tank/healers, and now am running 1 feral druid tank, 1 shadow priest (who heals well enough as shadow with like zero gear Thanks RAF!) and 3 locks.

I originally ran them with 2 paladins, my main 70 tankadin as a booster, and another paladin, because I like paladins, they got a free lvl 30 mount, and I wanted to make another toon to be a 'booster' for toons on my main account (this was all before RAF, so I didn't pursue that route, and just quested in 5 man teams once I got RAF) I originally spec'd them as Affliction, so I could make a simple button mash macro that did most of the work for me. I also had the holy paladin spamming Flash of Light on whoever had aggro, and it worked in Hellfire Ramps (but keep in mind i was running a 70 paladin tank...)

Now, with the new makeup, with RAF toons added in, and spec'd demonology, It's so friggin easy! I feel like I'm running hunters with Boars, but with spells instead of arrows, with more utility. Now, I just put a few dots on it, send felguards in, and wait for mob to die. If I get in a pinch, I can hellfirex3/tranquility on druid and priest AoE Heals. If I get in a real bind, Demonology x 3 immolation aura, and more hellfire.

Not sure how 2 locks would go, but I think having the felguards as personal tanks would be a real boon. All locks have instant corruption now, so that takes away one reason for going affliction. Just DoT and send felguards in, and keep repeating. For elites, or bosses, just do more DoTs first, and SB spam