Bardark to PLD, Barlight to DRK.

I would also give Reflect to PLD and allow it a sort of Aquaveil effect where you can reflect up to a certain number of spells before it wears.

Stipulations?

It only affects single target spells, and includes support spells like Cure, Protect, Haste, etc.

So a PLD with reflect could reflect Tier I-V elemental nukes and enfeebling spells but would also Cure I-IV, Protect I-V, Shell I-V and so on.

Reflect should return the spell to the caster, and a PLD self healing/buffing would be unaffected.