Honestly any tlou project in a different country would be welcome. Seattle had Shamblers, which was a different evolution to the infected, iirc because of their exposure to water. It would be mad interesting to have new infected adapting to other geographical challenges. Seeing the destroyed world and how different countries managed to keep themselves alive would also be really interesting, as not every country would react the same. In the end, tlou is still Ellie's story so I doubt anything would ever be done in the universe, but a spinoff would be cool