Here's a variety of posts I found, which turns out to be echoing similar things as our first heart attack pull...   (2 tanks total methods)

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It's funny how an empowered shock vortex is a complete joke while the regular abilities such as the kinetic bomb and unpowered shock vortex can cause raid wipes due to positioning in hard mode, for 10 at least.

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They definitely balanced this with a ranged heavy + pally healer comp + hunters on 10man, I feel very sorry for melee heavy comps, if you don't have a paladin healer then it also gets very painful, I tanked both princes and they hit for 15-20k with 43k armor I could go from 100% to 0 in 2.4 seconds flat, a kinetic bomb does 18,000 damage and will auto wipe you 99% of the time, it also spawns and drops a lot faster.

You have to play safe from 100-1%, one random death can lead to a tank death or a missed kinetic bomb then everyone dies near instantly. Even after you learn the fight it's so easy to get murdelized by RNG.

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Just downed this tonight. We ran..

Myself - Warrior - Tanking both melee
Druid - Tanking Kel

Hunter - pet handling bombs
DK - pet handling bombs
Mage
Warlock
Ret Pally

Oh...and holy pallies? Nah...

Resto Druid
Resto Shaman
Disc Priest

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Bizarrely enough, as soon as we switched to two-tanking it (prot war taking both melee, paladin tank on Keleseth) with a kitty on full-time flame orb duty, the fight turned trivial. o_O Pretty sure it'll be a one-shot next week.

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We assign 2 pets and have 2 hunters be alert on the bombs, the fight isn't really quick, it's just 5 minutes of hoping a bomb doesn't land or something dumb happens.

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We did 10 heroic Blood Princes last night and found changing our setup helped immensely. We were doing 2 prot warriors on Taldaram and Valanar and a Nether Protection spec'd warlock on Keleseth. Had a resto druid, disc priest, and holy priest healing and 2 MM hunters, an unholy DK, and elemental shaman for DPS.

After several struggling attempts (albeit a few to individual player error) and even a 2% wipe we just decided to try and switch things up. We had one of the warriors switch back to his main spec Fury and had the elemental shaman go to his off spec resto gear. 1 Tank on Taldaram and Valanar and then 1 ranged tank with 4 healers was laughably easy and we one shot it as soon as we made the change. We just positioned the melee mobs at the center of the stairs and had Keleseth kind of near the middle of the room. 4 healers were spread in a square pattern, and 1 hunter covered all of the stairs for Kinetic orbs, while the other hunter covered the west and shared the south with the elemental shaman who also covered the east.

Pretty much no one ever had to move unless a Shock Vortex was placed on them or they were kiting an Empowered Flame. We even played tag to bring the Nuclei on the outside toward the warlock just so he didn't have to run all over the place later in the fight and mess with healing range. One other small thing I would mention is that being the sole person to the north bouncing Kinetic Orbs, I would come into melee range of Taldaram when he was Empowered so that I would never get targeted by Empowered Flames and destroyed because of having no one else in melee but the tank and one DK to soak and shrink it.

Maybe this information will help some guilds looking for an alternative strategy if theirs isn't working. It was a pretty long kill (maybe 6 minutes or something, didn't really keep track) but it was very smooth and there were never any moments of panic with 3 ranged splitting up the room.