GohanSSJ:
Conversion/Thorns Paly => Missionary
Elemental Paly => Avenger
Also for the Ranger, how bout getting a Holy Freeze merc, so that you don't have to waste points in holy freeze, and can dump some into Holy Schock that way your bow will be doing Fire/Lit dmg, while your merc does cold dmg.
Another idea would be to max Holy Freeze, Holy Lit, and Holy Fire and get a might merc, that way your physical dmg will be boosted by your mercs might, and you can switch between cold, lit and fire dmg from the 3 auras depending on the situation.