Hey bro! Great news for you :D
I've found a REALLY COOL site for sprites, including the missing sprites from DS game, such as Raidramon, Digmon,...
But unfortunately, I don't have enough posts for posting links, so I'll probably post the way to get there :D. That site is a PHOTOBUCKET gallery of DIGITALDESTINYCLAN, and its name is DIGIMON AND ICON SPRITE
Btw, I've been searching for that guy's name on Google, and what I found was a suprise: Some OW sprites for you! You must search: digimon sprite archive digital sprite destiny on Google, and enter the first result.
I've included a demo picture for you
This demo included 3 sprite of Fusion Sprites, and you may add them to your Fakemon :D
I'll do anything to help you on sprites & Story, cause I'm not really good at scripting and using tools :D