I always thought Guardian's Crusade was pretty bad.
I know some people seem to have really enjoyed the game but to me it seemed so simple... like a beginner RPG 101 for kids. There were so many good RPGs out at the time that after a few hours with Guardian's Crusade I gave it back to my friend and moved on to other RPGs that had much more to offer me.
It didn't do the game any favors that its art direction was fairly generic and while well composed, I didn't care much for the music either.