You can definitely build tanky crusaders.
Right now my build is using Champion of Akarat with the rune that gives every dmg tick you do a 50% chance to knock 1 sec off every CD except Champion itself.
I put down Fallen Sword with the burning circle, and Consecration with the burning field dmg as well. All the ticks of dmg from that reduce the CDs so much that I'm stacking 2-3 burning fields.
My law is Valor, with the activation that causes enemies to drop Nephalem Glory bottles when hit. I permanently have 3 stacks of Glory.
My left click is Punish, which increases block chance, and every time I block with it I do AOE fire dmg, then my right click is Blessed Hammer, with the rune that makes the hammers leave trails of fire. Blessed Hammer only costs 10 wrath to use, which is good because Fallen Sword costs 25 or 30 Wrath, so you don't want to use a heavy-wrath right click.
Consecration increases your regen a whole shit load when you stand on it so that, along with the passive that heals you for 3500 health every time you block, are keeping me alive. My other passives are the one that increases your block chance by 15% in exchange for your ability to dodge, and Holy Strength so I can use a 2h with shield.
It's a high dmg build with good sustainability, and since all the dmg is fire, you can make your dmg skyrocket with some +fire dmg % items.
I've messed with a Provoke build with Shield Bash, which is fun, but is probably better for group play. This build above is for solo.
