How large was the permanent standing force in the despotate in the 1450s? How many could be temporarily drafted by Thomas and Demetrios together on an emergency basis? Is an assumption of a permanent standing force of 4000 or so and an emergency levy of around 15000 too large for something like the Morea to provide, considering that it is quite large and the land is reasonably arable? What was its economy like in the mid 15th century? What sort of feudal army could it support?