This is what I am currently building up towards.
2Hand Tank
Good taunting (5pc armor set) - Tormentor armor (When you deal direct damage with a Charge, Leap, Teleport, or Pull ability, you gain 3642 Physical Resistance and Spell Resistance and taunt the enemy to attack you for 15 seconds.)
Self sustainable (Healing and Resource) - Stonekeeper Monster set and various passives and actives.
Various shielding capabilities - Crusader armor (When you deal direct damage with a Blink, Charge, Leap, Teleport, or Pull ability, you consecrate the ground beneath you for 10 seconds and gain a damage shield that absorbs 1595 damage for 6 seconds)
High Stamina Recovery potential - various passives and active skills
Group oriented - (additional Crusader buff - Every 2 seconds you and up to 11 group members in the area gain Minor Courage for 12 seconds. These effects can occur once every 20 seconds and the damage shield scales off the higher of your Weapon or Spell Damage.)
additionally group oriented - Radiant Aura, Replenishing Barrier, Explosive Charge off balance and stun, Bone Shield synergy, Solar Disturbance synergy

Can switch between 2H front and back bar
to use 2H front and sword and shield on back bar
with minimal changes and maintain effectiveness.

For most content. Trails may be more challenging.