This is just an idea I have based on the low number of players on Dwilight. At least in the realm that I am most active in, there are roughly 133% more regions than their are nobles and of the nobles that are there in the realm, very few actually play the game regularly, resulting in mass starvation of regions almost constantly.
I don't know if lifting the restriction would ultimately fix the problem since people would still need to be more active, but it might lead to active players sending more of their characters to the continent.
Anyway, just something I wanted to bring up, it does make Dwilight, at least for me, almost unplayable if the only thing you can do is run around fixing regions from starvation because their lords don't get on enough to buy food.
I do realize that the banker now has access to the food stores of a region but it does require the lords of these regions to allow him to do so, and as such it also requires the banker to be somewhat active.