I'm also on xb na, and am shifting my v14 cat nightblade to tanking. After looking at these builds that get posted with all these specific gear requirements and exacting skill demands, I'm going with the basics. A tank is supposed to be the lump that all the mobs poke. That's the fundamental role - to be the center of attention, to be the red cape that the bull charges, to be the worm on the fish hook.

Start with that as your goal, to be the red X that all the mobs beat on while still surviving. Now add things that will support that goal. I'm going with 5 heavy 1 of each of the others, for as much base armor as possible while activating the beneficial passives from the medium and light armor lines - because reduction in the cost of abilities and increases in regen / effectiveness means I have the juice to do my job properly. At the moment I'm wearing 5 lamae set and 4 hist bark. Comparing the increased dodge *chance* while block from hist bark to the definite counter-damage that happens from the lamae set, it seemed that the lamae could be more worthwhile because of that reliability... But I'm not done testing that yet, so it's not nailed down.

As far as skills. I'm right now running with razor caltrops (assault), ransack (1hand & shield), and inner fire (undaunted) for the purpose of staying the target. Add on a gap closer (invasion for me for the increased stun, might switch to ambush after leveling the line higher) and something to help keep my juice up (siphoning). There's my main bar. I wish there was an aoe taunt. Still making big changes to the back bar, looking between bow and two hand. Bow is helpful for sucking up the aggro, bombard and poison and focused aim and the burning ground volley can *** off mobs while you are trying to kite them around. Two hand has rally and multi-target on normal attacks and brawler's multiple targets and brawlers damage shield. As long as it gets the job done, that choice may come down to personal taste and other pvp considerations. Because there's no way people will do a skill re-spec for each switch to/from cyrodiil, that back bar may be the core of what a person likes to use in pvp land

Speaking of champ points, I'm still experimenting. Some types of attacks, I can be surrounded by 4 mobs equal to my level and without blocking they are only taking nibbles off my health bar. Other types of attacks, one mob equal to my level is something that demands my attention.

And for ultimates - right now I'm playing with meteor. Yeah, I'm a stam build. Yeah, it's meteor. But I am just enjoying the sight of dropping a big rock on the target. It's just so much fun! It will be even more fun after a shooting star morph that generates ultimate to drop the rock again! Otherwise, I'm looking into a team-up between heroic slash and warhorn. Maybe as something on the back bar because those would be periodically refreshed, leaving the fun fiery rock falling from the sky on the front bar.

Basically, that's it. To be a tank, first be able to do your job - be the tethered goat that lures out the T Rex in the movie jurassic park. But survive.

Dreugh King Slayer set is decent for PvE, not so great for PvP
Morihaus isn't good for my play style, I don't roll through enemies often.
Pelinals curiass might be really awesome
Varen's legacy would be good for sap essence spammers