Maybe something like this for AOM2:
Age of Superstition (476-1492)(Age of Kings in Age Mythology version):
Periods: Pagan Age, Conversion Age, Legend Age,
Paradise Age, Apocaliptic Age (The last being something like the Titan Age in AOM:TT, which grants you a 'Titan' unit like the Biblical monsters Behemoth or Leviathan, or an Apocalyps GP.)
Instead of minor Gods, you choose 'minor religions' (Like 'Templar Knights' and 'Hospitallers', or 'Confuscianism' and 'Taoism')
Civs: Christians,Muslims and Chinese (te last also including the Mongols)
Resources: food, gold, stone, favor
Campaigns: not campaigns about Joan of Arc and Barbarossa, but campaigns about, for example, King Arthur
Favor: Maybe Christians could gain favor by building monuments (chappels, monasteries, churches, cathedrals), Muslims by praying and Mongols by fighting.
MU's: Unicorns, Behemoths, Leviathans
GP's: Conversion, Apocalyptic riders, reincarnation of Buddha (something like the SoO)