mages/wizards:
-
weapon skills (dagger, spear, whip are sufficient)
remove peek
remove enhanced damage
remove protections
remove 'remove curse'
remove bless
+
add third attack
add more shields
add sandstorm

cleric/priest:
-
weapon skills (mace, flail, whip, spear are sufficient)
remove fire breath
+
add third attack
add fourth attack
add dual wield
add 2nd dual
add sever
add something like midnight sun/sandstorm
add chain lightning
add parry
add shield levitation
add protection neutral

thief/mercenary:
-
nothing
+
add fifth attack
add blackjack
add armor
add giant strength

warrior/gladiator
-
backstab
envenom
+
charge
armor
giant strength
cure critical
shield smash
stomp 

ranger/strider
-
remove all cures (disease, poison, blindness, curse)
remove acid blast
remove sanctuary
remove mass healing
remove frenzy
remove protections
remove plague
remove slow
remove weaken
+
add 2nd dual
add 3rd dual
add dispel magic (vortex of gaea)
add elementals
add chain lightning
add shield levitation

druid/sage
-
weapon skills(same as priest)
+
add chain lightning
add sandstorm (blizzard, tsunami, etc.)
add brew, scribe
add third attack
add fourth attack
add dual wield
add demonfire

vampire/lich
-
circle
earthquake
faerie fire
calm
+
add dispel magic
add dual wield
add fourth attack
add fifth attack
add 2nd dual
add protection neutral
add wither
add bloodshield
add second hit for feed

monk/shaolin
-
faerie fog
cure blindness
gouge
+
add chaos blow
add shield smash
add stomp
add cleanse
add stances
add roundhouse
add more hits to kick
add nerve pinch

assassin/deathmaster
-
nothing ;)
+
add blade poison
add shadow walk