I also only visited a tiny proportion of the Frontier universe.
The fact that I know there are all those worlds out there is enough, I dont need to visit them especially when they are mostly going to be computer generated barren rocks.
As long as there are a fair few worlds dotted around the universe that are 'interesting' that will make exploration worthwhile, especially if there is a chart that explains the more interesting ones that people might want to visit because they contain something worth seeing. But also there should be other surprise worlds that may be covered by subtle hints, clues in missions, etc that will reward the player when visiting them especially if you have to negotiate a tricky ring system or a high gravity well of a black holes in order to get there!
)
