As everyone has pointed out, this game was amazing. Applying the Phoenix Wright formula to philosophy actually makes more sense than applying it to law. It was very exciting to debate philosophy, and it was also much more educational than trying to read philosophy (especially Kant). The visuals were great, especially the designs of Ariadne, the Arbiter, and the protagonist. Music was sweet. Everything is good.
I hope you make more of these, but I'm afraid they'd all end in the same conclusion as this game did. Still, it'd be fun to do this over with various branches of metaphysics.