In my current 5.02 game i 've met a single NPR Race, who turn out to be friendly. After 15 years from first contact we're in pretty good terms, sharing Geo and Grav survey, and we gave each other trade access.
The problem is that, while my civilians have been tradingd my goods to them from day one, in almost 10 years of trade i've never been visited by one of their ships!
I'm not sure if this is WAD or some kind of bug. The NPR has TN capability since it has a few starships (pretty big and fast from the little i've learned from passive sensors) and a colony in the same system of their homeworld. There are some very big ships that are traveling from the homeworld to the colony and back regularly, so i suppose they have freighters too, and of course there are JG connecting Sol and their Homeworld (2 jumps).
I can see 2 possible explanations:
1) They don't have civilan shipping companies, and the cargos i' ve seen are government controlled.
2) They don't know the way to get to Earth, possibly because they can't (want?) make Gravitational Surveys of their own system, or the other system separing us, so they don't know of the JumpGates already in place and ready to be crossed.
It's all of this, or maybe something else, WAD ? I've encountered some kind of strange isolationist? ("You can sell me your goods but I don't even want to know where you live, let alone sell you my wares")
Is there somthing i can do about, in this case? Does Grav survey sharing imply the sharing of already known Jump Points of both races at the moment of the granting, or it only applies to the surveys executed AFTER granting?
Thanks for your help