Another way to include AD in this workflow and open a whole range of different possibilities would be the support of some CAD file formats such as STP, DWG or, best for rhino users, 3DM.
According to the Rhino support they have an SDK for their 3DM files.
As the crew from Rhino are getting the same requests the other way around they apparently tried to contact you guys at Affinity several months ago with no response.
This is really the last tie that´s keeping AI installed on my mac, so it would be terrific to know this feature on your to-do list :)