I've been thinking about this for a while. The only thing I've come up with is increasing the damage threasholds for spells, like fireball
As a 3rd level spell, 10d6 is max (as written)
As a 5th level spell, 15d6 is max
As a 7th level spell, 20d6 is max
As a 9th level spell, 25d6 is max
I was...