Larger campaign map can either be the map with size of Rome 2 / Attila / Augustus campagin or just depicting smaller area but in more zoomed in. Either way I expect similar number of provincies,regions, settlements and general size as these bigger campaigns. :-)

Only piece of info for this larger campaign pack was the picture below. And that´s is pointing to Cherusci with "germanic" warrior ...It could be Armenius and that would point to battle of Teutonburg forest. Cherusci are noted around 100 BC to 100 AC and as we already have Augustus campaign i would expect settings after that time. So 14 AC and onward...so may be something about first wave of migration? Marcomanni war, third century crisis..