Just to correct you, Anthonius:
- 801AD - "The east roman empire still has all balcans,asia minor and a part of italy..." - Don't know about Asia Minor and Italy, but the Balkans were most certainly not all under the ERE.

- 1090AD - "The "new"things that a mod like this could offer could be the serbian,croatian and bulgarian rebelions as starting factions of the mod..." - Don't know about Serbia and Croatia, but the Bulgarian rebellions between 1072 and 1185 were rather minor/insignificant on a continental scale.