When a hero levels, you see that their health and basic attack damage increase. They also gain an ability point. This clearly means you want to level your rogue and gladiator heroes since they need basic attack damage and health. However, sage and mage heroes rely on abilities to heal/damage. Consider Vega. Once you level Favor of the Sun God to 5/5, and max magic from gear and cards, is there any benefit to leveling her anymore?
Put simply, does hero level alone boost the healing/damage of sage/mage abilities? Or should I leave my Vega at level 35 (Or 45 for 6/5 favor of the sun god).