I have to say I really enjoy Crusading Strikes + Blessed Champion + Seal of the Crusader.
This has me convinced that useless crap like Turn Evil, Divine Spurs, and Stoicism need to be scrapped in favor of the return of Seals as a stance bar.
Seal of Light - Your melee attacks heal you or an ally within your Aura for X.
Seal of Inquisition - Your melee attacks, Crusader Strike, and Judgment strike up to 4 additional targets for 25% of normal damage.
Seal of Justice - Your melee attacks have a chance to stun non-player targets for 2 seconds. Player targets are snared by 90%, decreasing by 30% each second.
Seal of Command - Your melee attacks have a high chance to strike an additional time.
Blessed Champion - You can have up to 3 Seals active at the same time.
I would think 2 Seals could be grouped together as a talent, requiring 2 talent points to learn all 4.
Blessed Champion would be a capstone talent. If you only spent 1 point to learn 2 Seals, both would always be active. If you spent 2 points to learn all 4 Seals, you would select on your stance bar whichever Seal you wanted inactive, leaving the other 3 active.