With Prisms and Attunement, forcing player to cater to some specific Weapons and Armor set according to their choices of Virtues, it seems logical to me that some Arcanics are out of place and should be swapped around to make all Pacts more synergistic with each possible classes' fantasies.
Here are the proposed changes, with the reasoning behind it, following the ideas that :
Courage (Warrior) should be played with defensive buffs and healing
Spirit (Wizard) with damaging spells and Area of Effect
Grace (Rogue) with damage buffs, crowd-control, and stealth
All-in-all making duals-stats users :
Courage+Spirit (Paladin) benefit from both healing and damage from Arcanics
Spirit+Grace (Ranger) combo both damaging spells and damage buffs
Grace+Courage (Assassin) benefit from both resistance and damage increase
Bromius :
Put Rump Thump (1) in 2 : It's a damaging spell
Put Wevetroot (2) in 3 : It's a crowd-control ability
Put Song of Growth (3) in 1 : It's an armor buff that should be for, and scale with, Courage builds
Garren Rood :
Swap Behest (2) with Stampede (3) ; Behest is a crowd-control ability that also increase damage, fitting with the Grace theme, while Stampede is an AoE damage spell
Mora's Hand :
Swap Ignus Wroth (2) with Ember (1) ; Ignus Wroth is an ability that deals damage when you get hit, being logical for Courage tanks instead of being contradictory with Spirit weaknesses, and Ember is an AoE damage spell
Ode Tempest :
Put Seismor (1) in 2 : It's an AoE damage spell
Put Astra Sphere (2) in 3 : It allows stagger when attacking
Put Atmos Sphere (3) in 1 : It's a resistance buff
Oscelda :
Put Bestone (1) in 3 : It's a damage multiplier and crowd-control ability
Put Elderbloom (2) in 1 : It's a healing ability
Put Phantom Flock (3) in 2 : It's a damage and crowd-control spell
Tethren
Swap Fellust (1) with Call of the Ancients (2) : Swap taunt and damage buff