Yeah, I'm adding the moors into it.

Don't worry, if there's anything that the RTW engine fixed which makes the game much better is that it's hard to conquer a place no matter how powerful the defending faction is. The spanish are gonna have a hard time on it, trust me.

The east, the east... I think it's OK that the east is starved of factions because really the Mongols and the Turks dominated the east. I think Bohemia would be good as it would give the HRE something to do rather than just walking around hacking rebels.