I think Hive World fertility should be reconsidered with the upcoming terraforming update. Yes, they were changed to high fertility to be consistent with the fertility rating of dense-atmosphere arid worlds, but I think there is a relevant difference in play. Dense-atmosphere arid worlds have natural regions of greening, where presumably a native biosphere thrives, even if over a limited portion of the surface. Hive worlds are explicitly stated to be devastating to the biosphere beyond the arcologies, and the arcologies appear to be designed for dense urban habitation more than large areas of fertile terrain used for agricultural production. If this change is implemented, I do think Ashdar Prime should start with an additional farm to help support its initial population.
On a semi-related note, I do think Dzibix should be called something other than an Arid world- maybe a 'Machine World'? Dzibix seems more different from a standard arid world than any other homeworld is different than the generic example of its world type.