FW has a lot of transit needs if it is going to grow into its potential in the core city.
I tend to agree. There needs to be a city agency responsible for developing transportation infrastructure to serve the core city. Its responsibilities should include bus, bicycle, and streetcar. Outside of that need, transit concerns are regional in nature and would be best served by a multi-county regional authority. Light rail and commuter rail typically go across cross municipal boundaries and serve a different and wider range of needs than municipal transit.
That said, I understand the difficulty in drawing lines between these two sets of modes. The 500 pound gorilla is DART, which is well established and serves both city and regional needs in Dallas and Collin Counties with light rail. The TRE is a partnership between DART and the Fort Worth (fill in new branding designation here) , and TEXRail essentially a limited partner ship between Fort Worth, NRH and Grapevine. I suppose the point is that Fort Worth needs an intra-city transportation focus to properly develop as an urban center rather than devoting scarce resources to regional projects like TEXRail. Integration into a future HSR network would probably be a shared concern between regional transit and core cities where the station(s) is/are located. Bus rapid transit on dedicated lanes... I suppose the route and the population served would best determine whether more a core or regional concern.
There are several paths Fort Worth could pursue if this sort of distinction was in fact adopted into policy. How DART would figure into the implantation of local/regional transit objectives might be THE big question. As other posters have pointed out before, the key limiting factor on transit development west of Dallas has been $$$, and that issue will most likely have to be addressed before any new plans can be seriously floated.