Guild Wars 2

Bark Skin
Enlargement

Considering Enlargement doesn’t require Signet of the Beastmaster anymore, both these traits will trigger at 25% health:

• 50% damage reduction
• 8s stability
• 25% bonus damage (8s)

Before it wasn’t possible to get these traits paired (since Signet of the Beastmaster cost 6(30) trait points). Now you have 4(20) trait points to spare.
Survival of the Fittest is 2(10) trait points away for condi removal.
Signet Mastery is 2(10) trait points away for Signet of Renewal condi removal.

For extra survivability at low health:
Superior Rune of Infiltration

• 4s stealth at 20% health

Superior Rune of the Earth

• 5s reflect at 20% health (Magnetic Aura)

For extra damage at low health:
Superior Rune of Orr

• 5s quickness at 20% health

http://wiki.guildwars2.com/wiki/Signet_of_the_Wild
Damage Increase: 25%
Movement Speed Increase: 50%
Stability: Duration: 8 s

Sorry.. i didn’t see the bark skin

It might be a nice combo, I concidered to use it in my 2-0-6-6-0 build. I think the runes are an over kill, committing to much to a mechanic that takes place when u’r about to die.
Worth mentioning that you will get better value out of the combo with vitality builds, i Know there are some rangers that like to first line in zerg with a GS. Could be an interesting build:
http://gw2skills.net/editor/?fNAQNAR3XjMq0yaHLOsw1aAChaVA0OG6gj1dSsDbdKz6DPBB-TVCBABccEA2T3wlq/E9+DS8AAA4CAklyPGVCywBBgUAsJMC-w

the more tnaky version:
http://gw2skills.net/editor/?fNAQNAR3XjMq0yaHLOsw1aAChaVA0OG6gj1dSsDbdKz6DPBB-TVCBABccEAie/BOV/RiHAAAXAgsU+xoSQGOIAIqbgUAsJMC-w

Missed another source of Quickness:

Superior Runes of Balthazar (4): When you’re struck below 20%, gain quickness for 5s (90s cooldown)