Okay, sorry I am so late with this, I usually don't get around to Deck helps much. I skimmed your thread, and I understand that you are getting back from a Hiatus, so some of this might not be plausible right now.
First, I don't recall (but I skimmed) seeing Dark Magician of Choas suggested (if I missed it, sorry!). You need one. It might cost a bit (I just bought one mint for $25.00). It is more than worth it!!
I also would suggest a 3rd Magical Dimention. Abuse it! PM me and I will tell you how. It is a Spellcaster deck's best friend! Drop Fissure, you won't need it.
Get a Last Will (They are common-SDY, SDE, TP7), you will need this to combo for your OTK.
Side Ceasefire and Magic Cylinder, replace with at least 1 Magician's Circle (difficult to find, but worth it as few people run, but the staple Spellcaster's and they will have to go into ATK mode- you bring out DMG or IFL, they bring out 1600 Breaker, or 300 MoF....WHAM!). Put another one in your Side Deck. Also side Card Destruction, Mage Power, Sage's Stone and Dedication Through Light And Darkness. These have special times to come out, when you are battling specific kinds of decks.
Loose the Toon Gemini Elf. No good. Plus you have enough 1900 hitters.
Put in another DMG. I know...that is a lot of Trib Monsters (6), but you will have plenty of ability to bring them out.
And, yes, if you can get one, an Enemy Controller works very well with this deck.
PM me with questions...I don't want to give too much of the synergy away.