I remember there being a few good optional rules like expanded rules for magical languages, existing skills, and using alternates systems like spell books, memorization and components.
There were a few great, inspiring lists (tricks of the trade), but I thought it was mostly just a slew of Arcane that made archmages ultimately versatile (perhaps too versatile). I also remember thinking it a little strange to have prosaic lists that went up to 50th level. Do we really need a 50th level Grooming Mastery spell? Actually, does anyone have an in-game example of a character using it Grooming Mastery in play? I'd love to hear that story...
Will have to dust it off and take another look at it.