Well, the position I'm arguing against is that the lords should be left alone, that it's better for them to have their fiefdoms be isolated places than to actually employ anyone or purchase anything, and that we should use tax law to incentivize the lords to never interact with the peasants.

(Or in other words - my actual position that the nobility should be abolished. I'm just surprised to see someone say not only that it should stay, but that the world would be better if they didn't provide any of the benefits people usually claim in defense of feudal society, so I'm trying to understand what their position is.)