I don't think it's possible for a skill's effect to change based off of a specific skill level. Instead, it appears that skills/spells somehow scale with the Player level. Take Minor Heal for example; its heal amount and stats and such are fixed, yet as the player gains levels the amount that is actually healed increases.
The only thing that scales with a specific skill level are the chances to apply status effects and/or AP cost due to insufficient skills, which I think is hardcoded into the game. Cooldown reduction via Intelligence is definitely hardcoded, since it only applies to the specific magic schools. Skills with "None" as their category (Staff of Magus) never have their cooldown reduced; I witnessed this when I was testing out custom Summons, when I moved my Boreas summon from None to Water, his cooldown decreased.
That being said, I could very well be wrong and there is a way to scale stuff. I didn't know about the Consume effect until I connected the dots between its presence in the SkillData and my exploration through the Potion effects.
