Quick question:
Is Susanoomon in the game? Haven't seen anyone find it and i don't think there are any challenges to unlock a way to get him. If that's the case then i have a sugestion:
Add the Ancient Digimon (AncientGreymon, AncientGarurumon, etc) and EmperorGreymon and MagnaGarurumon (So that you can jogress them into Susanoomon)...also, maybe add the X-Antibody