if Texas were to divide itself

Lots of discussion about how Texas could have divided itself.

Wonder how it would have done that, had it happened. Since as the show points out the eastern half is basically a southern state and the western half a western state, that suggests one possible way. On the other hand, would the western half want to have an outlet somewhere on the Gulf of Mexico? Using the principles discussed in the book, e.g. sharing rivers, degrees of width and height, communities of interest, etc., how do you think Texas might have been divided?