What's the core dice system? I'm really not a fan of 1d20 + stuff vs target number.
You have some sort of improve-by-use system. How do you solve the bootstrapping and "wow this is really tedious to track" problems?
Why would I play this instead of Fate? Your site says it has over 500k builds, but I'll one-up you by saying Fate has infinite builds. If you can succinctly describe it and convince your table it's cool, you can have it as your high concept in Fate without having to fight the system to find a mechanical representation.
Edit: What's the magic system? Is it basically D&D's "you have a list of bespoke spells with no coherent underlying system. Declare your spell, check the resource off your sheet, and the spell happens as described"?