The Archaeology of the Meroitic State: New perspectives on its social and political organisation by David N. Edwards is an interesting, yet short read. Arguing in favor of the Meroitic state (and perhaps during its Napatan phase and even the state of Kerma) as a Sudanic one resembling medieval and early modern states like the Darfur Sultanate, Borno, and the Funj or Sinnar Sultanate, Edwards believes the Meroitic state must be reconceived. Although the impact of Egyptian civilization and influences is undeniable in Kush, the role of the environment and archaeological evidence suggests the Meroitic state was founded upon different principles than that of Egypt.
Instead of the control of production with ample surpluses, Nubia, especially Lower Nubia before the adoption of the waterwheel or saqia by the 300s, the kingdom was likely a segmentary state with the power of the rulers based on "trade" and warfare. In this case, the Meroitic rulers controlled "trade" or exchange with the North and through a redistribution network to provincial elites, controlled other provinces (loosely). The state's military capacity was likely also significant since military force and raiding could ensure a supply of locally valuable commodities (like livestock) and, through subjugated territories, access to gold, ivory, slaves, and other valuable exports to the north.
Much of the book tries to fit Lower Nubia into this model, based on analyses of settlement patterns and data from cemeteries or burials. While much work remains to be done, if Lower Nubia's population truly was so low during this period of Meroitic "resettlement," then the theory of Edwards that these settlements were likely oriented to continue or ensure central government control of the routes to trade with Egypt for Mediterranean or Near Eastern prestige goods (later redistributed through the royally-controlled distribution network across the state). Thus, Meroe's "fall" in the 4th century may have had more to do with the loss of control of northern trade from the royal court, eventually leading to provincial elites severing ties while Blemmyes and Nobadaes settled in Lower Nubia in larger numbers. Since we don't know enough about the Meroitic state in relation to its core area (where it presumably exerted far more direct control and was better able to tap into local production and control access to water sources), one wonders about the core of the state's productive capacity for locally produced prestige goods. Despite the limited evidence from archaeology and our inability to read Meroitic inscriptions, the idea of the Meroitic state being "Sudanic" is an interesting hypothesis.