Seconding this- maybe 1850s-60s California during the late Gold Rush + the recent Mexican-American war/Revolution of Ayutla + the ongoing Indian Wars would be very interesting in terms of story-telling dynamics, and offers a lot in terms of unique landscape opportunities.    Rockstar would need to start again with a fresh roster of characters, but they might be able to slip in a few cameos here and there (i.e. Uncle, Hosea, a younger recast Landon Ricketts, Rains Fall). Since the land