
There are threads in forum about various Warden tank combos. Just search.
https://forums.elderscrollsonline.com/en/discussion/409498/warden-tank-build/p1
My gear:
2x Tremorscale + 5x Thunderbug‘s Carapace + 5x Warrior-Poet (but 4x on back bar)
I have One Hand and Shield on the front bar and Ice Staff on back bar. Once Summerset hits, it will count as two pieces.
My CP and stats are for stamina DD as I play that, too and I don't play trials at all (maybe one day only normal one).
With OHaS and Ice Staff I can almost 100% permablock if needed as when you run of one resource, another is regenered so you just switch.
There are so many possible skill combos... I currently use:
1) Pierce Armor – Heroic Slash – Ice Fortress – Gripping Shards – Bull Netch // Enchanted Forest***
2) Elemental Blockade – Shimmering Shield* – Green Lotus – Subterranean Assault* – Polar Wind** // Permafrost***
*flex spots: Deceptive Predator or Leeching Vines or Bone Surge - depends on content
**bad skill IMO until I get Vigor.
***Use Wild Guardian in overland content and easier dungeons. In hard veteran dungeons bear quickly dies so it's useless.
I can't crack 8,7k DPS as my gear is completely in heavy thx to RNG with Monster helm and shoulder... Anyway, with this build I smash overland content easily (your typical meta tank is useless in overland content as it can't kill anything). I'm killing zone bosses like never before. Another one last night:
I hope it helps. Just be creative and use ESO Build Editor to play around before you buy/farm/craft gear.
But my Warden is not slow in overland content at all. I have enough both single and AoE damage so for example when I enter in Public Dungeon I can round up several groups of enemies and kill them relatively fast and they barely scratch me.
Also Wild Guardian push your DPS a lot as you can see.
Another thing is gear.
1) If I had at least one medium piece, I would crack 9k DPS.
2) You can use Selene Monster set to beef up DPS or even better Stormfist.
3) Or you can use Spawn of Mephala Monster set and Armor of Veiled Heritance instead of Warrior-Poet. Mephala and Elemental Blockade means Veiled Heritance constantly process. 10k+ DPS easily. I don't use that combo as I have +57 in stamina attributes and I want a bit health (to be at 30k) which is provided by Warrior-Poet (and I had some parts and other cheaply bought). Or use Hunding's Rage in heavy weight.
There are various possibilities to be effective hybrid tank/DD.