I play on 2 worlds myself. My main city is on Felyndral, as for it's neighbour population, it is as bad if not worse than what Jewess has on her Winyandor city. As for visits, world map neighbours is nearly non existent. Trading activity from world neighbours is 15, 20+ rings or maybe more away due to all the dead space. I have gold mines that are 3 months old, it's that bad.
I also have a baby city on Winyandor, fortunately I have a better neighbour population than Jewess even though they are mainly all dead until I get further out. Based on visits received and trading activity, I will reach several more active players 2 - 3 rings out.