I can say that from the perspective of programming, they will likely have little programming exclusively for Gonzalez. They will likely ask an advisory board what subjects can be covered by KCTI, choosing those that are also concerns of all areas covered by KSTX. Maybe they'll do a couple of community announcements in Morning Edition. Possibly they might to a polka show but that depends on several things. Certainly, I do not know their minds or intent, but rather form my opinion based on what I have seen happen elsewhere. It's less about not doing that much as it is practicality.
If you look at various NPR statewide services such as in northern states, exclusive programming for one station isn't the norm, but also, no community is ignored. Forecasts, for example, might be just local, but rather statewide with perhaps an emphasis on cities where a station is simulcasting (ie: for Western Nebraska including North Platte and Scottsbluff...)