Guild Wars 2

classes should have skills used only in wvw.

Engineer,
a supply deport, cost 200 supply, holds 150 supply, can be place anywhere last 30 mins. reuse timer 360 seconds.

Thief,
ability to scale outer wall of keep, and trail a rope down behind them. only two people may use the rope, if the thief is attacked while climbing he falls and takes 10x fall damage, anyone on the rope at that time will die.

after using this ability the thief may not enter stealth until he gets his breath back, 10 seconds. ability cooldown 45seconds.

Mesmer,
the Mesmer has the ability to clone 10 people(players, if no other targets, it will clone the caster) retain 20% of targets health, the illusion last 20 seconds, for the duration of the spell the Mesmer is weakens and loses 5% of their damage.

Necro

has the ability to use the bodies of friend of foe, the targets have to be in a dead state, friends will be instantly resurrected but only retain 20% of their stats, foes will be resurrected, but as minions.

the spell drains the necro of all life force, and he cannot store any more for 30 seconds, he is also weakened by the effort, lowering stats by 10% for the duration of the spell 20 seconds, after 20 seconds all who were revived will die. spell cooldown 400 seconds.

guardian.

gives his life for his group, the guardian will die and become the a angel all who are downed for dead around him (up to 10 players) will be revived at full health, the guardian will be able to cast boons apon those he has saved, after 20 seconds the guardian enters a downed state and those who were saved will lose 20% stats for 20 seconds. skill cooldown 400 seconds.

warrior

The warrior inspires his group, making all those around him immune to all control effect for 6 seconds, they gain 10 seconds of fury. after 10 seconds have passed all players who were effected are rooted in place for 5 seconds.
cooldown 250 seconds.

Let me be the first to add a Ranger ability to that list:

Ranger WvW skill “Reroll”:
The ranger magically transforms into a class that is useful for WvW. No cooldown, bound to F12 button.

All kidding aside, I like the creativity but these things sound like balancing nightmares:

• Engi: This one I like. It has no combat use/advantage and plays on the importance of supply in WvW. Although with 5 engineers in your team you could just take supplies to build a golem army at the gates of the enemy keep so it would be quite a bit OP.

• Thief: Stealth up, take a mesmer with you. All Keeps are now essentially towers.
  Combine it with the Engi from above and build 10 superior rams for inner. ???. Profit.

• Mesmer: Shattermesmers pump a alot of illusions on their victims as it is. adding 10 clones to that -even at the expense of 5% dps – will give them a severe advatange in small scale.

• Necro: This one is severly underpowered in comparrison. With 20% of your stats you’ll die almost instantly.

• Guardian: As a Guardian I say bring it. Being able to rezz 10 dead players at the expense of merly downing -any warrior got banner-rezz for me please? – is pretty sweet and totally not OP.

• Warrior: 6 Seconds of unstrippable stability sounds good. However, the drawback of being rooted and a 250 recharge makes this one very underpowered.

Having said all that, I like the idea of having WvW-specific abilities depending on the classes. It could be cool to have some rolls that do not affect combat and balance out nicely.