I think your underselling the nuncio aquilla, it’s not as obvious what it’s doing but a 30% toughness damage reduction, constant regen, HALVING enemy melee attack rate and reducing their damage by 30% for a full 20 seconds is a pretty strong ability, it has a small radius and a long cooldown which is tough but it’s more than halving incoming damage and shuts down melee swarms
i think atm most of the arbite’s strength is in how strong their (exclusive) weapons are and how little filler they have in their skill tree, compared to veteran where i have to pay 3 points if i dare to want to switch from the left side to the right side, arbites have it very easy