for more threat, put points into seals of the pure, for more survivability put points into divinity, for more utility put points into DS/DG or Pursuit of Justice, for more mana put points into spiritual attunement.
this is my build as you can see i did my build more for threat than survivability as I'm very geared and so are my healers. I'm thinking of speccing out of running into seals of the pure though
it all has to do with play style, for a greater or lesser extent. SotP, Crusade, and Reckoning all give approximately (within a couple percentage points) the same amount of threat. With mobs of the type listed in Crusade, it edges the others out a bit more, but speccing into it, you lose 1 point in SA and that makes tanking anything other than cutting edge content more difficult on your mana.