Whoa. Some of you guys are jaded or high.
hard to distinguish... its really as simple as letting us use our level 87 ability Void Shift in arenas... I mean...
Still the only class/spec that can't...
You don't seem to remember god comp do you? Lemme jog your memory:
You're training the mage using every cooldown you have to get them low through the druid and spriests healing, you finally get him to block one. Ok, we're doing good, just one more block to go and we can score a kill. Oh shit we're getting low and my druid is trapped, MD trap super fast and start spamming heals to turn on god mode. Meaninglessly swap to priest because there's no way you could ever force disperse without every cooldown up. Get back on mage and somehow get lucky with cross cc and force the second block without cooldowns. Get the mage low again despite him having two healers and being cc'd by three targets. Lifeswap to deny the kill attempt. Get the mage low again, block's again. Snap comes back up. Repeat until you randomly gib someone in a deep.
Now, the whole purpose of that paragraph is to remind you of what the huge "get out of jail free card" that life swap was/is to a lesser extent now. You line everything up perfectly for what should be a kill only to be denied by an instant ability. Life swap is one of those game breaking abilities that needs to be removed along with necrotic strike, smoke bomb, disrupting shout, solar beam, psyfiend, symbiosis... the list continues. At least totemic restoration and readiness are gone now.