Paladin in general in my opinion could use a little tweaking

Both Sword/Shield Oath, being able to switch between them, and both taken off the GCD, but have a cooldown to switch between them (such is the case with Defiance and Deliverance)

Shield Swipes potency increased, and switched to a Cone in front of you, cause other then Circle of Scorn.... what other AE dps does Paladin do?

Fight or Flight, reduced TP Cost of abilities while it is active

Spirits Within, Increased potency, keep it hitting hardest when health is full still

Tempered Will could be party wide or add an effect to it for everybody

Just my thoughts.

Also, some sort of attack that uses MP, just one, like holy blade or something of that nature.