As I plan the Neostriker universe, I'm planning it to be just that. That means Neostriker will take parts across the world, even though it certainly has its origin story rooted in a family line. In fact, I would like to write stories taking place before as well as after. I don't know about doing prequels yet, but I think telling stories that take place in the world before Neostriker would be interesting.
As for the end goal, I don't have one yet. An idea about converging everything together for an epic has crossed my mind, but I feel like that would be too ambitious or would basically be redoing Shining. So at the moment, I just want to write stories. Hopefully I can start again sometime soon.