Co-ordinating the building of Market Places would be no different to co-ordinating the various infrastructure we already do.
Besides that most infrastructure is non critical, warehouses are..
If you need to constantly poke the Lords to set food, you appointed the wrong nobles to the position. Sure there might not have been anyone better, welcome to the hassles we all face when the wrong person is doing the wrong job.
Tell me one realm where this isn't required, in all those I have been lords need to be constantly reminded.
