enforces with overwhelming military might (provided by feudal grants from city states) only one right, that of emigration
Considering that you can not change human nature, do you believe that the central government would continue to limit themselves to this one power? With overwhelming military power, they could increase their power unchecked. Is the feudal grants supposed to limit this in some way, or are there other ideas you had in mind for preventing this?
The feudal grants are intended to prevent the central government from overstepping its boundaries, yes. I expect the most likely failure mode of this government wouldn’t be from the central government, but the regional governments, and either because they decide they want the central government to have more power, or because they decide they want a stronger central government that provides more guarantees.
Considering that you can not change human nature, do you believe that the central government would continue to limit themselves to this one power? With overwhelming military power, they could increase their power unchecked. Is the feudal grants supposed to limit this in some way, or are there other ideas you had in mind for preventing this?
The feudal grants are intended to prevent the central government from overstepping its boundaries, yes. I expect the most likely failure mode of this government wouldn’t be from the central government, but the regional governments, and either because they decide they want the central government to have more power, or because they decide they want a stronger central government that provides more guarantees.
I think the most obvious failure mode is that the right of emigration will turn out to be impossible to enforce.