Part 2:
Early March: Roaming Yubel Event
Mid March: Yami Bakura and Yami Marik Now Gate Duelists
Mid March: Jesse Anderson Unlock Event
Late March: Battle City Event (Unlock Arkana)
Early April: KC Cup
Mid April: Syrus Truesdale Unlock Event
Mid April: Duel Gauntlet
Late April: Dr. Crowler Unlock Event
Early May: D.D. Tower Fire Dimension Event
Mid May: Virtual Realm Event (Unlock Noah Kaiba)
Mid May: Roaming Dartz Event
Late May: Neo-Spacian Aqua Dolphin Unlock Event
Early June: Tristian Taylor Unlock Event
Mid June: Roaming Special Aster Event
Mid June: Vagabond Special Event
Late June: Rebecca Hawkins Unlock Event
Geez man you have the most long-term ideas... I personally think you're going to be wrong for most, if not all, of them, but they are possibilities, I suppose...
Dartz might be unlockable as oricalchos shunorous(which was his ace in the anime) was released despite being toltally different but adrian WILL be unlockable i know people wont believe me or think im looney but last night i had a vision where adrain was a playable character and he played burden of the mighty i can still remember his saying "i activate my spell card burden of the mighty"