Practice to use your new DK mechanic

I might be off track, but when looking at the original post, I was thinking you were talking about new mechanics, much in lines with the DK rune system. As the runic power system is similar to the Warrior's rage system. Both of these together gave us the whole of the DK mechanic. 
So that in mind, you have to think of something to add to an existing class. But, this is made even more difficult as 2 classes and 1 spec were given a new mechanic/rebooted mechanic. This comes in the form of the new Soul Shard system for Locks, Holy Power for Pally's, and Solar Power/Eclipse Power for Moonkins. But, by integrating some of the existing mechanics together you could come up with a new class. Wow gold would be some help.
Though I would like to see a new Class using Intellect Plate, it’s not for one class, such as a Battle Mage or something. Give them a Rage/Mana mechanic for gathering power with weapon swings. Instant cast spells like Fire Nova/Pyroblast/etc. to use up the rage/mana, perhaps a power/charge system like Holy Power that builds up and actual casting spells use up the charges. Depending on the kind of Talent trees you could have something like: Tanking/Dps/Caster Dps trees. Though yes, this makes the fight for weapons that much more bogged but it’s the only thing I can think of for intellect plate. Then I may need some cheap wow gold to enhance.  
But, if Blizzard would come up with a new Hero Class it would have new mechanics all together much like the DK rune system was when the Dk was introduced. The other factor is what the Hero Class represents in the Wow story. The Dk was integral in the Wrath story, so any future expansions would have the same integration with the new Hero Class. All in all that is just my 2 cents, and I am glad that someone decided to look at what would be in the new hero class instead of just saying "this should be the next hero class."
We could create an extra talent tree for existing classes:
Druid: A PvP feral tree, complete with more stuns, rogue-like stealth (aka increased speed while stealthed), more slows, and possibly healing in form or longer HoTs, with a little bit of increased cyclone. 
Hunter: Take out Camouflage, upgrade it so that it is an real rogue stealth, and give them big openers.
Rogue: Anti caster- lengthen garrote, reduce slows/snares and give a REAL mind-numbing poison.
Mage: Melee mage, tank mage, c'mon. Try it.
Warrior: Boring but potentially strong. Warriors are already armor-based classes, this would make them more-so. +5% armor, +10% strength, and give each armor slot a unique ability that is buffed by the strength of the armor. EX: Weapon turns red, and deals +100% damage to all ability for 5 seconds, or spikes shoot out of leg plates, and the armor of the legs deals that much DPS to any attackers in melee range. These you can buy wow gold to enhance.
Priest: Class based off being very ramp-up. Say, each time they damage somebody (incl. dots) they get +0.01% damage and each time they heal somebody they get 0.03% healing until by the end of the fight they're at +300% damage. 
Death Knight: Anti- healer. Give them that Necrotic Strike, 30% MS, but -15% healing done to them. Also give them another pet.
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