Yes, I have checked for topics similar to this and I have seen someone already suggest something similar, but my ideas are a little different.
Weapons and armor can be enchanted with special effects that would provide a permanent boost for the weapon. However, these enchantments would be expensive and potentially be rare boss drops.
There could be an enchantment seller in the Mage City who sells certain basic enchantments.
Some of which may include:
Lucky Upgrading - Boosts chances of scroll success by 25% (30S)
Effect would be shown as a green aura.
Weak Poison Tip (Hunter Only) - Inflicts lingering damage even after attacking an enemy (50S)
Effect would be shown as a light purple aura.
Sharpened Edge - boosts current crit ratio by 40% (60S)
Effect would be shown as an orange aura.
Enchantments are irreversible and can’t be removed from a weapon, so one would need to enchant their weapon wisely.