As Perth's frustrated banker, let me give you how the frustration came to be.
I love(d) trading, and under the old system, the majority of regions had food set to automatically be available for sale, and it was like this for years. I knew my travelling route, I could pick up and move food, make sure our allies could arrange pickups, and make sure our surplus stayed healthy. This system worked very well.
I did this for two years without having to ask local lords for help. They were happy because they made gold off their surplus food, and I was happy because I kept everyone fed.
Now, they have to micro manage the duties I used to. The black market is useless (and I did use it, and ended up in my own kingdoms jail because of it - thank you for the pardon King Jean!) But, when push came to shove, I could forcefully move food if I had to (which I rarely did).
The new system comes in and I see 5000 units of food surrounding areas that are now starving. I can't use the black market to move them and requests to local lords come back with "You're not my Duke". So, after a few days talking with Dukes, who are very helpful, I watch a major city continue to starve.
Add to it that everyone is deployed for war and there is no market close enough to safely ask our army Marshal's to allow a few region lords to leave to set up offers.
So, my role now is to keep the Duke's informed of my food report and hope for the best. Again, they are very helpful, but my previous ability to spend my own time to keep my realm fed is completely gone. The Banker has become a decentralized position that most region lords want no part it.
Even bringing back the automatically sell surplus food would greatly increase my abilities to perform my job.
I understand that things change, and I accept it and will adapt, but as it is now, I have the responsibility to feed the nation, but not the authority to do so.
Cheers,
Scott