Ghostcrawler says
” The answer to almost every question of “But why would they bring me?” should be “Because you know what the hell you’re doing.” Page 15
Priesty Changes can be found here
What makes Shadow Priests special?
Nothing.
SHOCK -HORROR- AWE
So we better know “what the hell we are doing”
Of course this isn’t going to stop me eulogizing about my love of Shadow ( cheers for the link)
We are becoming less tool-like – and more a DPS class. Currently we are ranked down on Boss dps amongst comparatively geared and skilled players in ICC. But give us some trash and we shine! Maybe this will be our equalizer.
Shadow Priests: ICC trash killers extraordinaire
But as for the changes.
In Cataclysm we are getting a Nuke: Mindspike ( level 81) which is Shadow Frost damage – no school lock – burst – blah. Yeah!
We are getting a speed boost ( Yeah no more Tuskarr’s Vitality)
I like Leap of Faith ( yeah) ( Please not be an extended April Fools cause I so want to make my raid members fly ( if it will be available as a out of shadow form holy ability.) but don’t like it’s intended use as a ‘rescue’ ( BOO) from stupidity. “pulled aggro, are being focused on in PvP, or just can’t seem to get out of the fire in time”
Instead of ” OMG Where’s my Heal “It will be “OMG where’s my Yank / LOF / Leap”
Yank ( no not you Americans… ) being a play on a bloggers blog name ( in the nicest possible way because I think it’s awesome The new Priest motto for healing will be ” You Yank it – I will yank you” Cheers You Yank it, You Tank it
Can you see raid chat “Yank me baby”
Divine Spirit /Prayer of Spirit ( one less buff! ) Yeah!
Misery will not longer affect spell hit ( mixed) Misery is currently a contributing reason why we still get invited to raids – we are no longer Mana regen special, Party Healing Special, take away our +hit and we really become another DPS class – so the changes really need to boost us comparably.
BALLZ – Need I say much more. My Shadow Orbs shall bring all the …. I like the idea of consuming a ball for a damage increase. It shall make it more a balancing act – fiends, orbs, dots, nukes, flays,
Overall – I can’t see anything bad about it – the complexity seems to have increased but this is early days – and only an intial impression. As a class – losing our specialness further – well its a little sad. As much as I like the idea of being comparable, it is a massive amount of pride to be able to kick the butt of a person comparatively geared when theorycrafting should say we shouldnt be.
I’m not likely to comment on continuing updates – changes happen. I’m somewhat excited – but am also restraining my self untill we see /test what changes come in.
If you want to read some other Shadow Priest reactions are ones I have found /read so far.
I was going to submit a Guest post on the changes for Wow.com but It’s only $10 bucks – and I am not even sure Australian’s can even sign up with Seed yet but if your in the US – got something to say – go for it!
Provided by 
Pugnacious Priest's Warcraft Blog 
I’m looking forward to the combination of Leap of Faith and Heroic Leap.
Warrior *charge*
Priest *yank warrior*
Warrior *leap*
Remember once upon a time when VE healed for enough that you’d actually sometimes see people wanting a spriest just for that reason (even if the dps was somewhat lower)? I used to play a holy paladin and man was it nice to have a spriest along to help mitigate aoe damage.
They don’t want you to think “I want to bring a shadow priest for this buff,” but “I want to bring my friend for this buff, who can be any of x/y/z.” Since Vampiric Embrace’s effect is somewhat unique (but one might say comparable to Judgment of Light or Improved Leader of the Pack) they want to keep its raid utility low.
Don’t yank me out of the fire… I’d rather die in the fire than have to interrupt my cast.. spiteful priests.. always thinking they know the best way to save our souls… 😉
Honestly, i LOVE being a shadow priest(uzidoesit-Boulderfist) the only problem is our aoe’s, as we DO have oine overpowered aoe, the variety would be nice. or atleast a mass DoT aoe, followed by a sear. but i honestly agree with previous people when they say that it will be a balencing act. The shadow priest class is already an EXTREMELY difficult class to play, seeing as using “death” is the most useless dps cast ive ever seen ( outside of pvp) it drops ur dps 500-700, which dosent seem like alot, but its the difference between 6.7kdps and 7.4-5, (which lo9oks good for raids). but if most spriests already cant pull ovver 9k dps in icc with the 30% buff(which is a joke if u cant do that btw–just quit) then balancing EVEN more of the spriest objectives(Life grip, dots, mf,mind spike, shiueld on urself [when heals fail HARD]) its going to be too much, and i guarentee we will be seeing alot more fails throughout this gme on the shadowpriest level. Which will make people like ME and my fellow AMAZING spriests more valuable for raids in cata.
Well said, sir.