Any other viable pally...?

[Vash]

I believe Conviction does break immunities.

Uhh...Sanctuary? I guess you mean Salvation perhaps?

But even still, if one's goal was to get the most out of the synergies, one should stay away from Salvation. 1 point in salvation gives +2% damage to each element, a 6% total. Whereas each point in the regular resist auras give 8% to their respective elements. The main aura would probably be one of the three resist auras depending on the situation.