Ringworld could work well as an open-ended style series. The world is so vast there would always be some new area to explore. Plus the visuals could be pretty

Ringworld could work well as an open-ended style series. The world is so vast there would always be some new area to explore. Plus the visuals could be pretty awesome. It could work along a similar vein to that show from the 70s, The Startlost, though with more connected arcs.