To get access to granaries, I stole an idea from another player, even if a basic idea. Basically, those who allow access to their granaries, in addition to the banker being able to quickly feed the starving region or move food away from looting armies or monsters in the region, would receive a portion of all the food profits from the banker's trading. I cut it pretty simple as 50% to a realm treasury the banker holds and 50% divided by the lords, by proportion of how much their region contributed that month.
...and the lords weren't smart enough to realize that they could have sold the food themselves, for 100% of the profits?
