If TWRA can create a MAV unit why can't they create other units like it? This seems a non-issue to me; why not manage turkeys at a local level? It's done for deer (by unit), rabbits (by species), fish (by species or body of water), bear and elk (by zone) etc. Seems to me for turkeys it also makes sense to consider counties that may be dominated by private vs. public.
Every year they survey the turkey hunting population so why not start logging those survey responses by zip code hunted along with their own research study data? Look how swiftly they responded to CWD in terms of testing, monitoring, creation of a new zone, and amending season/limits. Sweeping almost draconian changes virtually overnight.
This isn't a case of "can't" because of know-how it's a case of "won't" for whatever reason(s).